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Finding the Fourth Proportional to 425,039.61, 586,553.70 and 231,444.30

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Solution

The fourth proportional to 425,039.61, 586,553.70 and 231,444.30 is: 319,392.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,039.61 : 586,553.70 = 231,444.30 : x
  2. Step 2: Convert to fraction form
    425,039.61/586,553.70 = 231,444.30/x
  3. Step 3: Cross multiply
    425,039.61x = 586,553.70 × 231,444.30
  4. Step 4: Simplify right side
    425,039.61x = 135,754,510,508.91
  5. Step 5: Solve for x
    x = 135,754,510,508.91/425,039.61
  6. Step 6: Final answer
    x = 319,392.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.