Home / 391,436,644.20-587,154,966.30-161,287,261.80

Finding the Fourth Proportional to 391,436,644.20, 587,154,966.30 and 161,287,261.80

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Solution

The fourth proportional to 391,436,644.20, 587,154,966.30 and 161,287,261.80 is: 241,930,892.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,436,644.20 : 587,154,966.30 = 161,287,261.80 : x
  2. Step 2: Convert to fraction form
    391,436,644.20/587,154,966.30 = 161,287,261.80/x
  3. Step 3: Cross multiply
    391,436,644.20x = 587,154,966.30 × 161,287,261.80
  4. Step 4: Simplify right side
    391,436,644.20x = 94,700,616,766,798,272
  5. Step 5: Solve for x
    x = 94,700,616,766,798,272/391,436,644.20
  6. Step 6: Final answer
    x = 241,930,892.70

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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.