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Finding the Fourth Proportional to 404,549.12, 606,624 and 123,998.72

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Solution

The fourth proportional to 404,549.12, 606,624 and 123,998.72 is: 185,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,549.12 : 606,624 = 123,998.72 : x
  2. Step 2: Convert to fraction form
    404,549.12/606,624 = 123,998.72/x
  3. Step 3: Cross multiply
    404,549.12x = 606,624 × 123,998.72
  4. Step 4: Simplify right side
    404,549.12x = 75,220,599,521.28
  5. Step 5: Solve for x
    x = 75,220,599,521.28/404,549.12
  6. Step 6: Final answer
    x = 185,936.88

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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.