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Finding the Fourth Proportional to 358,489.20, 538,900.20 and 307,167.60

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Solution

The fourth proportional to 358,489.20, 538,900.20 and 307,167.60 is: 461,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,489.20 : 538,900.20 = 307,167.60 : x
  2. Step 2: Convert to fraction form
    358,489.20/538,900.20 = 307,167.60/x
  3. Step 3: Cross multiply
    358,489.20x = 538,900.20 × 307,167.60
  4. Step 4: Simplify right side
    358,489.20x = 165,532,681,073.52
  5. Step 5: Solve for x
    x = 165,532,681,073.52/358,489.20
  6. Step 6: Final answer
    x = 461,750.82

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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.