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Finding the Fourth Proportional to 217,702.98, 326,680.56 and 91,332

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Solution

The fourth proportional to 217,702.98, 326,680.56 and 91,332 is: 137,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,702.98 : 326,680.56 = 91,332 : x
  2. Step 2: Convert to fraction form
    217,702.98/326,680.56 = 91,332/x
  3. Step 3: Cross multiply
    217,702.98x = 326,680.56 × 91,332
  4. Step 4: Simplify right side
    217,702.98x = 29,836,388,905.92
  5. Step 5: Solve for x
    x = 29,836,388,905.92/217,702.98
  6. Step 6: Final answer
    x = 137,050.90

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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.