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Finding the Fourth Proportional to 399,313,601.80, 598,970,402.70 and 112,099,265.80

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Solution

The fourth proportional to 399,313,601.80, 598,970,402.70 and 112,099,265.80 is: 168,148,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,313,601.80 : 598,970,402.70 = 112,099,265.80 : x
  2. Step 2: Convert to fraction form
    399,313,601.80/598,970,402.70 = 112,099,265.80/x
  3. Step 3: Cross multiply
    399,313,601.80x = 598,970,402.70 × 112,099,265.80
  4. Step 4: Simplify right side
    399,313,601.80x = 67,144,142,378,600,344
  5. Step 5: Solve for x
    x = 67,144,142,378,600,344/399,313,601.80
  6. Step 6: Final answer
    x = 168,148,898.70

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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.