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Finding the Fourth Proportional to 425,761.01, 638,456.07 and 122,088.06

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Solution

The fourth proportional to 425,761.01, 638,456.07 and 122,088.06 is: 183,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,761.01 : 638,456.07 = 122,088.06 : x
  2. Step 2: Convert to fraction form
    425,761.01/638,456.07 = 122,088.06/x
  3. Step 3: Cross multiply
    425,761.01x = 638,456.07 × 122,088.06
  4. Step 4: Simplify right side
    425,761.01x = 77,947,859,178.80
  5. Step 5: Solve for x
    x = 77,947,859,178.80/425,761.01
  6. Step 6: Final answer
    x = 183,078.91

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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.