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Finding the Fourth Proportional to 347,634.60, 521,624.70 and 137,279.40

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Solution

The fourth proportional to 347,634.60, 521,624.70 and 137,279.40 is: 205,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,634.60 : 521,624.70 = 137,279.40 : x
  2. Step 2: Convert to fraction form
    347,634.60/521,624.70 = 137,279.40/x
  3. Step 3: Cross multiply
    347,634.60x = 521,624.70 × 137,279.40
  4. Step 4: Simplify right side
    347,634.60x = 71,608,325,841.18
  5. Step 5: Solve for x
    x = 71,608,325,841.18/347,634.60
  6. Step 6: Final answer
    x = 205,987.34

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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.