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Finding the Fourth Proportional to 463,497.87, 639,574.20 and 259,520.43

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Solution

The fourth proportional to 463,497.87, 639,574.20 and 259,520.43 is: 358,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,497.87 : 639,574.20 = 259,520.43 : x
  2. Step 2: Convert to fraction form
    463,497.87/639,574.20 = 259,520.43/x
  3. Step 3: Cross multiply
    463,497.87x = 639,574.20 × 259,520.43
  4. Step 4: Simplify right side
    463,497.87x = 165,982,571,400.91
  5. Step 5: Solve for x
    x = 165,982,571,400.91/463,497.87
  6. Step 6: Final answer
    x = 358,108.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.