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Finding the Fourth Proportional to 217,761.21, 326,641.82 and 59,989.68

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Solution

The fourth proportional to 217,761.21, 326,641.82 and 59,989.68 is: 89,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,761.21 : 326,641.82 = 59,989.68 : x
  2. Step 2: Convert to fraction form
    217,761.21/326,641.82 = 59,989.68/x
  3. Step 3: Cross multiply
    217,761.21x = 326,641.82 × 59,989.68
  4. Step 4: Simplify right side
    217,761.21x = 19,595,137,956.47
  5. Step 5: Solve for x
    x = 19,595,137,956.47/217,761.21
  6. Step 6: Final answer
    x = 89,984.52

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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.