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Finding the Fourth Proportional to 325,432.86, 488,134.71 and 88,774.78

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Solution

The fourth proportional to 325,432.86, 488,134.71 and 88,774.78 is: 133,158.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,432.86 : 488,134.71 = 88,774.78 : x
  2. Step 2: Convert to fraction form
    325,432.86/488,134.71 = 88,774.78/x
  3. Step 3: Cross multiply
    325,432.86x = 488,134.71 × 88,774.78
  4. Step 4: Simplify right side
    325,432.86x = 43,334,051,490.61
  5. Step 5: Solve for x
    x = 43,334,051,490.61/325,432.86
  6. Step 6: Final answer
    x = 133,158.19

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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.