Home / 347,149.80-520,719.84-136,789.56

Finding the Fourth Proportional to 347,149.80, 520,719.84 and 136,789.56

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Solution

The fourth proportional to 347,149.80, 520,719.84 and 136,789.56 is: 205,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,149.80 : 520,719.84 = 136,789.56 : x
  2. Step 2: Convert to fraction form
    347,149.80/520,719.84 = 136,789.56/x
  3. Step 3: Cross multiply
    347,149.80x = 520,719.84 × 136,789.56
  4. Step 4: Simplify right side
    347,149.80x = 71,229,037,796.87
  5. Step 5: Solve for x
    x = 71,229,037,796.87/347,149.80
  6. Step 6: Final answer
    x = 205,182.42

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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.