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Finding the Fourth Proportional to 250,459.50, 345,634.14 and 137,279.82

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Solution

The fourth proportional to 250,459.50, 345,634.14 and 137,279.82 is: 189,446.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,459.50 : 345,634.14 = 137,279.82 : x
  2. Step 2: Convert to fraction form
    250,459.50/345,634.14 = 137,279.82/x
  3. Step 3: Cross multiply
    250,459.50x = 345,634.14 × 137,279.82
  4. Step 4: Simplify right side
    250,459.50x = 47,448,592,525.05
  5. Step 5: Solve for x
    x = 47,448,592,525.05/250,459.50
  6. Step 6: Final answer
    x = 189,446.17

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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.