Home / 391,193,695.20-587,168,456.40-238,138,687.20

Finding the Fourth Proportional to 391,193,695.20, 587,168,456.40 and 238,138,687.20

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Solution

The fourth proportional to 391,193,695.20, 587,168,456.40 and 238,138,687.20 is: 357,438,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,193,695.20 : 587,168,456.40 = 238,138,687.20 : x
  2. Step 2: Convert to fraction form
    391,193,695.20/587,168,456.40 = 238,138,687.20/x
  3. Step 3: Cross multiply
    391,193,695.20x = 587,168,456.40 × 238,138,687.20
  4. Step 4: Simplify right side
    391,193,695.20x = 139,827,525,372,346,432
  5. Step 5: Solve for x
    x = 139,827,525,372,346,432/391,193,695.20
  6. Step 6: Final answer
    x = 357,438,085.25

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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.