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Finding the Fourth Proportional to 250,705.88, 345,974.18 and 137,528.63

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Solution

The fourth proportional to 250,705.88, 345,974.18 and 137,528.63 is: 189,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,705.88 : 345,974.18 = 137,528.63 : x
  2. Step 2: Convert to fraction form
    250,705.88/345,974.18 = 137,528.63/x
  3. Step 3: Cross multiply
    250,705.88x = 345,974.18 × 137,528.63
  4. Step 4: Simplify right side
    250,705.88x = 47,581,354,990.77
  5. Step 5: Solve for x
    x = 47,581,354,990.77/250,705.88
  6. Step 6: Final answer
    x = 189,789.55

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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.