Home / 287,684.38-431,227.18-161,139.10

Finding the Fourth Proportional to 287,684.38, 431,227.18 and 161,139.10

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Solution

The fourth proportional to 287,684.38, 431,227.18 and 161,139.10 is: 241,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,684.38 : 431,227.18 = 161,139.10 : x
  2. Step 2: Convert to fraction form
    287,684.38/431,227.18 = 161,139.10/x
  3. Step 3: Cross multiply
    287,684.38x = 431,227.18 × 161,139.10
  4. Step 4: Simplify right side
    287,684.38x = 69,487,559,680.74
  5. Step 5: Solve for x
    x = 69,487,559,680.74/287,684.38
  6. Step 6: Final answer
    x = 241,540.95

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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.