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Finding the Fourth Proportional to 268,740.38, 403,168.88 and 81,747.02

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Solution

The fourth proportional to 268,740.38, 403,168.88 and 81,747.02 is: 122,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,740.38 : 403,168.88 = 81,747.02 : x
  2. Step 2: Convert to fraction form
    268,740.38/403,168.88 = 81,747.02/x
  3. Step 3: Cross multiply
    268,740.38x = 403,168.88 × 81,747.02
  4. Step 4: Simplify right side
    268,740.38x = 32,957,854,496.74
  5. Step 5: Solve for x
    x = 32,957,854,496.74/268,740.38
  6. Step 6: Final answer
    x = 122,638.27

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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.