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Finding the Fourth Proportional to 338,227.96, 465,691.26 and 287,139.64

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Solution

The fourth proportional to 338,227.96, 465,691.26 and 287,139.64 is: 395,349.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,227.96 : 465,691.26 = 287,139.64 : x
  2. Step 2: Convert to fraction form
    338,227.96/465,691.26 = 287,139.64/x
  3. Step 3: Cross multiply
    338,227.96x = 465,691.26 × 287,139.64
  4. Step 4: Simplify right side
    338,227.96x = 133,718,420,747.55
  5. Step 5: Solve for x
    x = 133,718,420,747.55/338,227.96
  6. Step 6: Final answer
    x = 395,349.99

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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.