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Finding the Fourth Proportional to 391,702,324.86, 587,532,224.66 and 119,051,834.22

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Solution

The fourth proportional to 391,702,324.86, 587,532,224.66 and 119,051,834.22 is: 178,571,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,702,324.86 : 587,532,224.66 = 119,051,834.22 : x
  2. Step 2: Convert to fraction form
    391,702,324.86/587,532,224.66 = 119,051,834.22/x
  3. Step 3: Cross multiply
    391,702,324.86x = 587,532,224.66 × 119,051,834.22
  4. Step 4: Simplify right side
    391,702,324.86x = 69,946,789,008,534,856
  5. Step 5: Solve for x
    x = 69,946,789,008,534,856/391,702,324.86
  6. Step 6: Final answer
    x = 178,571,288.88

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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.