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Finding the Fourth Proportional to 253,397.77, 380,063.85 and 84,878.49

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Solution

The fourth proportional to 253,397.77, 380,063.85 and 84,878.49 is: 127,306.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,397.77 : 380,063.85 = 84,878.49 : x
  2. Step 2: Convert to fraction form
    253,397.77/380,063.85 = 84,878.49/x
  3. Step 3: Cross multiply
    253,397.77x = 380,063.85 × 84,878.49
  4. Step 4: Simplify right side
    253,397.77x = 32,259,245,691.59
  5. Step 5: Solve for x
    x = 32,259,245,691.59/253,397.77
  6. Step 6: Final answer
    x = 127,306.75

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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.