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Finding the Fourth Proportional to 262,149.80, 393,321.90 and 104,491.40

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Solution

The fourth proportional to 262,149.80, 393,321.90 and 104,491.40 is: 156,775.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,149.80 : 393,321.90 = 104,491.40 : x
  2. Step 2: Convert to fraction form
    262,149.80/393,321.90 = 104,491.40/x
  3. Step 3: Cross multiply
    262,149.80x = 393,321.90 × 104,491.40
  4. Step 4: Simplify right side
    262,149.80x = 41,098,755,981.66
  5. Step 5: Solve for x
    x = 41,098,755,981.66/262,149.80
  6. Step 6: Final answer
    x = 156,775.84

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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.