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Finding the Fourth Proportional to 217,487.61, 326,127.88 and 89,383.87

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Solution

The fourth proportional to 217,487.61, 326,127.88 and 89,383.87 is: 134,033.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,487.61 : 326,127.88 = 89,383.87 : x
  2. Step 2: Convert to fraction form
    217,487.61/326,127.88 = 89,383.87/x
  3. Step 3: Cross multiply
    217,487.61x = 326,127.88 × 89,383.87
  4. Step 4: Simplify right side
    217,487.61x = 29,150,572,548.69
  5. Step 5: Solve for x
    x = 29,150,572,548.69/217,487.61
  6. Step 6: Final answer
    x = 134,033.26

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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.