Home / 338,836.08-508,251.21-86,117.29

Finding the Fourth Proportional to 338,836.08, 508,251.21 and 86,117.29

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Solution

The fourth proportional to 338,836.08, 508,251.21 and 86,117.29 is: 129,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,836.08 : 508,251.21 = 86,117.29 : x
  2. Step 2: Convert to fraction form
    338,836.08/508,251.21 = 86,117.29/x
  3. Step 3: Cross multiply
    338,836.08x = 508,251.21 × 86,117.29
  4. Step 4: Simplify right side
    338,836.08x = 43,769,216,844.42
  5. Step 5: Solve for x
    x = 43,769,216,844.42/338,836.08
  6. Step 6: Final answer
    x = 129,175.20

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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.