Home / 381,057.24-571,613.80-128,336.42

Finding the Fourth Proportional to 381,057.24, 571,613.80 and 128,336.42

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Solution

The fourth proportional to 381,057.24, 571,613.80 and 128,336.42 is: 192,514.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,057.24 : 571,613.80 = 128,336.42 : x
  2. Step 2: Convert to fraction form
    381,057.24/571,613.80 = 128,336.42/x
  3. Step 3: Cross multiply
    381,057.24x = 571,613.80 × 128,336.42
  4. Step 4: Simplify right side
    381,057.24x = 73,358,868,714.60
  5. Step 5: Solve for x
    x = 73,358,868,714.60/381,057.24
  6. Step 6: Final answer
    x = 192,514.04

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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.