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Finding the Fourth Proportional to 296,974.80, 445,414.80 and 86,563.52

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Solution

The fourth proportional to 296,974.80, 445,414.80 and 86,563.52 is: 129,831.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,974.80 : 445,414.80 = 86,563.52 : x
  2. Step 2: Convert to fraction form
    296,974.80/445,414.80 = 86,563.52/x
  3. Step 3: Cross multiply
    296,974.80x = 445,414.80 × 86,563.52
  4. Step 4: Simplify right side
    296,974.80x = 38,556,672,948.10
  5. Step 5: Solve for x
    x = 38,556,672,948.10/296,974.80
  6. Step 6: Final answer
    x = 129,831.46

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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.