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Finding the Fourth Proportional to 325,909.40, 488,864.10 and 89,251.70

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Solution

The fourth proportional to 325,909.40, 488,864.10 and 89,251.70 is: 133,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,909.40 : 488,864.10 = 89,251.70 : x
  2. Step 2: Convert to fraction form
    325,909.40/488,864.10 = 89,251.70/x
  3. Step 3: Cross multiply
    325,909.40x = 488,864.10 × 89,251.70
  4. Step 4: Simplify right side
    325,909.40x = 43,631,951,993.97
  5. Step 5: Solve for x
    x = 43,631,951,993.97/325,909.40
  6. Step 6: Final answer
    x = 133,877.55

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1.5x scale

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.