Home / 238,721.28-358,105.29-86,959.59

Finding the Fourth Proportional to 238,721.28, 358,105.29 and 86,959.59

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Solution

The fourth proportional to 238,721.28, 358,105.29 and 86,959.59 is: 130,447.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,721.28 : 358,105.29 = 86,959.59 : x
  2. Step 2: Convert to fraction form
    238,721.28/358,105.29 = 86,959.59/x
  3. Step 3: Cross multiply
    238,721.28x = 358,105.29 × 86,959.59
  4. Step 4: Simplify right side
    238,721.28x = 31,140,689,195.23
  5. Step 5: Solve for x
    x = 31,140,689,195.23/238,721.28
  6. Step 6: Final answer
    x = 130,447.90

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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.