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Finding the Fourth Proportional to 250,645.22, 345,892.11 and 137,468.78

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Solution

The fourth proportional to 250,645.22, 345,892.11 and 137,468.78 is: 189,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,645.22 : 345,892.11 = 137,468.78 : x
  2. Step 2: Convert to fraction form
    250,645.22/345,892.11 = 137,468.78/x
  3. Step 3: Cross multiply
    250,645.22x = 345,892.11 × 137,468.78
  4. Step 4: Simplify right side
    250,645.22x = 47,549,366,373.33
  5. Step 5: Solve for x
    x = 47,549,366,373.33/250,645.22
  6. Step 6: Final answer
    x = 189,707.85

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Why These Related Problems?

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