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Finding the Fourth Proportional to 309,959.28, 465,016.92 and 88,343.28

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Solution

The fourth proportional to 309,959.28, 465,016.92 and 88,343.28 is: 132,537.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,959.28 : 465,016.92 = 88,343.28 : x
  2. Step 2: Convert to fraction form
    309,959.28/465,016.92 = 88,343.28/x
  3. Step 3: Cross multiply
    309,959.28x = 465,016.92 × 88,343.28
  4. Step 4: Simplify right side
    309,959.28x = 41,081,119,968.30
  5. Step 5: Solve for x
    x = 41,081,119,968.30/309,959.28
  6. Step 6: Final answer
    x = 132,537.15

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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.