Home / 347,837.20-521,780.10-137,447.80

Finding the Fourth Proportional to 347,837.20, 521,780.10 and 137,447.80

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Solution

The fourth proportional to 347,837.20, 521,780.10 and 137,447.80 is: 206,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,837.20 : 521,780.10 = 137,447.80 : x
  2. Step 2: Convert to fraction form
    347,837.20/521,780.10 = 137,447.80/x
  3. Step 3: Cross multiply
    347,837.20x = 521,780.10 × 137,447.80
  4. Step 4: Simplify right side
    347,837.20x = 71,717,526,828.78
  5. Step 5: Solve for x
    x = 71,717,526,828.78/347,837.20
  6. Step 6: Final answer
    x = 206,181.30

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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.