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Finding the Fourth Proportional to 252,087.98, 347,898.28 and 138,910.74

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Solution

The fourth proportional to 252,087.98, 347,898.28 and 138,910.74 is: 191,706.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,087.98 : 347,898.28 = 138,910.74 : x
  2. Step 2: Convert to fraction form
    252,087.98/347,898.28 = 138,910.74/x
  3. Step 3: Cross multiply
    252,087.98x = 347,898.28 × 138,910.74
  4. Step 4: Simplify right side
    252,087.98x = 48,326,807,519.53
  5. Step 5: Solve for x
    x = 48,326,807,519.53/252,087.98
  6. Step 6: Final answer
    x = 191,706.12

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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.