Home / 513,177.12-769,674.96-139,229.28

Finding the Fourth Proportional to 513,177.12, 769,674.96 and 139,229.28

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Solution

The fourth proportional to 513,177.12, 769,674.96 and 139,229.28 is: 208,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,177.12 : 769,674.96 = 139,229.28 : x
  2. Step 2: Convert to fraction form
    513,177.12/769,674.96 = 139,229.28/x
  3. Step 3: Cross multiply
    513,177.12x = 769,674.96 × 139,229.28
  4. Step 4: Simplify right side
    513,177.12x = 107,161,290,514.83
  5. Step 5: Solve for x
    x = 107,161,290,514.83/513,177.12
  6. Step 6: Final answer
    x = 208,819.31

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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.