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Finding the Fourth Proportional to 215,531.53, 323,297.33 and 65,772.61

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Solution

The fourth proportional to 215,531.53, 323,297.33 and 65,772.61 is: 98,658.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,531.53 : 323,297.33 = 65,772.61 : x
  2. Step 2: Convert to fraction form
    215,531.53/323,297.33 = 65,772.61/x
  3. Step 3: Cross multiply
    215,531.53x = 323,297.33 × 65,772.61
  4. Step 4: Simplify right side
    215,531.53x = 21,264,108,063.02
  5. Step 5: Solve for x
    x = 21,264,108,063.02/215,531.53
  6. Step 6: Final answer
    x = 98,658.92

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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.