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Finding the Fourth Proportional to 423,639, 635,721.12 and 246,229.56

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Solution

The fourth proportional to 423,639, 635,721.12 and 246,229.56 is: 369,496.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,639 : 635,721.12 = 246,229.56 : x
  2. Step 2: Convert to fraction form
    423,639/635,721.12 = 246,229.56/x
  3. Step 3: Cross multiply
    423,639x = 635,721.12 × 246,229.56
  4. Step 4: Simplify right side
    423,639x = 156,533,331,660.31
  5. Step 5: Solve for x
    x = 156,533,331,660.31/423,639
  6. Step 6: Final answer
    x = 369,496.98

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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.