Home / 391,445,218.06-587,396,789.59-145,971,439.18

Finding the Fourth Proportional to 391,445,218.06, 587,396,789.59 and 145,971,439.18

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Solution

The fourth proportional to 391,445,218.06, 587,396,789.59 and 145,971,439.18 is: 219,042,539.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,445,218.06 : 587,396,789.59 = 145,971,439.18 : x
  2. Step 2: Convert to fraction form
    391,445,218.06/587,396,789.59 = 145,971,439.18/x
  3. Step 3: Cross multiply
    391,445,218.06x = 587,396,789.59 × 145,971,439.18
  4. Step 4: Simplify right side
    391,445,218.06x = 85,743,154,745,799,008
  5. Step 5: Solve for x
    x = 85,743,154,745,799,008/391,445,218.06
  6. Step 6: Final answer
    x = 219,042,539.77

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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.