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Finding the Fourth Proportional to 636,394.90, 954,342.16 and 231,491

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Solution

The fourth proportional to 636,394.90, 954,342.16 and 231,491 is: 347,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,394.90 : 954,342.16 = 231,491 : x
  2. Step 2: Convert to fraction form
    636,394.90/954,342.16 = 231,491/x
  3. Step 3: Cross multiply
    636,394.90x = 954,342.16 × 231,491
  4. Step 4: Simplify right side
    636,394.90x = 220,921,620,960.56
  5. Step 5: Solve for x
    x = 220,921,620,960.56/636,394.90
  6. Step 6: Final answer
    x = 347,145.49

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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.