Home / 521,151.14-781,195.63-221,440.61

Finding the Fourth Proportional to 521,151.14, 781,195.63 and 221,440.61

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Solution

The fourth proportional to 521,151.14, 781,195.63 and 221,440.61 is: 331,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,151.14 : 781,195.63 = 221,440.61 : x
  2. Step 2: Convert to fraction form
    521,151.14/781,195.63 = 221,440.61/x
  3. Step 3: Cross multiply
    521,151.14x = 781,195.63 × 221,440.61
  4. Step 4: Simplify right side
    521,151.14x = 172,988,436,836.53
  5. Step 5: Solve for x
    x = 172,988,436,836.53/521,151.14
  6. Step 6: Final answer
    x = 331,935.26

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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.