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Finding the Fourth Proportional to 302,456.80, 453,685.20 and 155,000.80

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Solution

The fourth proportional to 302,456.80, 453,685.20 and 155,000.80 is: 232,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,456.80 : 453,685.20 = 155,000.80 : x
  2. Step 2: Convert to fraction form
    302,456.80/453,685.20 = 155,000.80/x
  3. Step 3: Cross multiply
    302,456.80x = 453,685.20 × 155,000.80
  4. Step 4: Simplify right side
    302,456.80x = 70,321,568,948.16
  5. Step 5: Solve for x
    x = 70,321,568,948.16/302,456.80
  6. Step 6: Final answer
    x = 232,501.20

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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.