Home / 391,437,331.70-587,155,997.55-161,287,949.30

Finding the Fourth Proportional to 391,437,331.70, 587,155,997.55 and 161,287,949.30

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Solution

The fourth proportional to 391,437,331.70, 587,155,997.55 and 161,287,949.30 is: 241,931,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,437,331.70 : 587,155,997.55 = 161,287,949.30 : x
  2. Step 2: Convert to fraction form
    391,437,331.70/587,155,997.55 = 161,287,949.30/x
  3. Step 3: Cross multiply
    391,437,331.70x = 587,155,997.55 × 161,287,949.30
  4. Step 4: Simplify right side
    391,437,331.70x = 94,701,186,764,035,328
  5. Step 5: Solve for x
    x = 94,701,186,764,035,328/391,437,331.70
  6. Step 6: Final answer
    x = 241,931,923.95

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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.