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Finding the Fourth Proportional to 486,874.85, 671,874.89 and 272,016.52

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Solution

The fourth proportional to 486,874.85, 671,874.89 and 272,016.52 is: 375,375.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,874.85 : 671,874.89 = 272,016.52 : x
  2. Step 2: Convert to fraction form
    486,874.85/671,874.89 = 272,016.52/x
  3. Step 3: Cross multiply
    486,874.85x = 671,874.89 × 272,016.52
  4. Step 4: Simplify right side
    486,874.85x = 182,761,066,413.41
  5. Step 5: Solve for x
    x = 182,761,066,413.41/486,874.85
  6. Step 6: Final answer
    x = 375,375.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.