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Finding the Fourth Proportional to 636,392.90, 954,339.17 and 231,489

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Solution

The fourth proportional to 636,392.90, 954,339.17 and 231,489 is: 347,142.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,392.90 : 954,339.17 = 231,489 : x
  2. Step 2: Convert to fraction form
    636,392.90/954,339.17 = 231,489/x
  3. Step 3: Cross multiply
    636,392.90x = 954,339.17 × 231,489
  4. Step 4: Simplify right side
    636,392.90x = 220,919,018,966.69
  5. Step 5: Solve for x
    x = 220,919,018,966.69/636,392.90
  6. Step 6: Final answer
    x = 347,142.49

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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.