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Finding the Fourth Proportional to 318,373.65, 439,353.18 and 175,130.55

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Solution

The fourth proportional to 318,373.65, 439,353.18 and 175,130.55 is: 241,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,373.65 : 439,353.18 = 175,130.55 : x
  2. Step 2: Convert to fraction form
    318,373.65/439,353.18 = 175,130.55/x
  3. Step 3: Cross multiply
    318,373.65x = 439,353.18 × 175,130.55
  4. Step 4: Simplify right side
    318,373.65x = 76,944,164,057.65
  5. Step 5: Solve for x
    x = 76,944,164,057.65/318,373.65
  6. Step 6: Final answer
    x = 241,678.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.