Home / 347,744.20-521,486.70-137,338.60

Finding the Fourth Proportional to 347,744.20, 521,486.70 and 137,338.60

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Solution

The fourth proportional to 347,744.20, 521,486.70 and 137,338.60 is: 205,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,744.20 : 521,486.70 = 137,338.60 : x
  2. Step 2: Convert to fraction form
    347,744.20/521,486.70 = 137,338.60/x
  3. Step 3: Cross multiply
    347,744.20x = 521,486.70 × 137,338.60
  4. Step 4: Simplify right side
    347,744.20x = 71,620,253,296.62
  5. Step 5: Solve for x
    x = 71,620,253,296.62/347,744.20
  6. Step 6: Final answer
    x = 205,956.72

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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.