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Finding the Fourth Proportional to 478,561.56, 717,845.12 and 123,551.32

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Solution

The fourth proportional to 478,561.56, 717,845.12 and 123,551.32 is: 185,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,561.56 : 717,845.12 = 123,551.32 : x
  2. Step 2: Convert to fraction form
    478,561.56/717,845.12 = 123,551.32/x
  3. Step 3: Cross multiply
    478,561.56x = 717,845.12 × 123,551.32
  4. Step 4: Simplify right side
    478,561.56x = 88,690,712,131.56
  5. Step 5: Solve for x
    x = 88,690,712,131.56/478,561.56
  6. Step 6: Final answer
    x = 185,327.70

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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.