Home / 347,876.20-521,838.60-137,486.80

Finding the Fourth Proportional to 347,876.20, 521,838.60 and 137,486.80

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Solution

The fourth proportional to 347,876.20, 521,838.60 and 137,486.80 is: 206,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,876.20 : 521,838.60 = 137,486.80 : x
  2. Step 2: Convert to fraction form
    347,876.20/521,838.60 = 137,486.80/x
  3. Step 3: Cross multiply
    347,876.20x = 521,838.60 × 137,486.80
  4. Step 4: Simplify right side
    347,876.20x = 71,745,919,230.48
  5. Step 5: Solve for x
    x = 71,745,919,230.48/347,876.20
  6. Step 6: Final answer
    x = 206,239.80

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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.