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Finding the Fourth Proportional to 302,456.55, 453,684.83 and 155,000.55

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Solution

The fourth proportional to 302,456.55, 453,684.83 and 155,000.55 is: 232,500.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,456.55 : 453,684.83 = 155,000.55 : x
  2. Step 2: Convert to fraction form
    302,456.55/453,684.83 = 155,000.55/x
  3. Step 3: Cross multiply
    302,456.55x = 453,684.83 × 155,000.55
  4. Step 4: Simplify right side
    302,456.55x = 70,321,397,401.65
  5. Step 5: Solve for x
    x = 70,321,397,401.65/302,456.55
  6. Step 6: Final answer
    x = 232,500.83

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Half scale
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Double scale
Find fourth proportional to 302,457.55, 453,686.33 and 155,001.55
Similar ratio
Find fourth proportional to 453,684.83, 680,527.24 and 232,500.83
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.