Home / 347,390.20-521,109.60-137,000.80

Finding the Fourth Proportional to 347,390.20, 521,109.60 and 137,000.80

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Solution

The fourth proportional to 347,390.20, 521,109.60 and 137,000.80 is: 205,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,390.20 : 521,109.60 = 137,000.80 : x
  2. Step 2: Convert to fraction form
    347,390.20/521,109.60 = 137,000.80/x
  3. Step 3: Cross multiply
    347,390.20x = 521,109.60 × 137,000.80
  4. Step 4: Simplify right side
    347,390.20x = 71,392,432,087.68
  5. Step 5: Solve for x
    x = 71,392,432,087.68/347,390.20
  6. Step 6: Final answer
    x = 205,510.78

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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.