Home / 391,436,719.20-587,155,078.80-161,287,336.80

Finding the Fourth Proportional to 391,436,719.20, 587,155,078.80 and 161,287,336.80

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Solution

The fourth proportional to 391,436,719.20, 587,155,078.80 and 161,287,336.80 is: 241,931,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,436,719.20 : 587,155,078.80 = 161,287,336.80 : x
  2. Step 2: Convert to fraction form
    391,436,719.20/587,155,078.80 = 161,287,336.80/x
  3. Step 3: Cross multiply
    391,436,719.20x = 587,155,078.80 × 161,287,336.80
  4. Step 4: Simplify right side
    391,436,719.20x = 94,700,678,948,246,144
  5. Step 5: Solve for x
    x = 94,700,678,948,246,144/391,436,719.20
  6. Step 6: Final answer
    x = 241,931,005.20

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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.