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Finding the Fourth Proportional to 253,076.17, 379,489.08 and 84,538.66

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Solution

The fourth proportional to 253,076.17, 379,489.08 and 84,538.66 is: 126,766.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,076.17 : 379,489.08 = 84,538.66 : x
  2. Step 2: Convert to fraction form
    253,076.17/379,489.08 = 84,538.66/x
  3. Step 3: Cross multiply
    253,076.17x = 379,489.08 × 84,538.66
  4. Step 4: Simplify right side
    253,076.17x = 32,081,498,307.83
  5. Step 5: Solve for x
    x = 32,081,498,307.83/253,076.17
  6. Step 6: Final answer
    x = 126,766.18

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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.