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Finding the Fourth Proportional to 229,974, 317,393.28 and 129,391.44

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Solution

The fourth proportional to 229,974, 317,393.28 and 129,391.44 is: 178,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,974 : 317,393.28 = 129,391.44 : x
  2. Step 2: Convert to fraction form
    229,974/317,393.28 = 129,391.44/x
  3. Step 3: Cross multiply
    229,974x = 317,393.28 × 129,391.44
  4. Step 4: Simplify right side
    229,974x = 41,067,973,545.52
  5. Step 5: Solve for x
    x = 41,067,973,545.52/229,974
  6. Step 6: Final answer
    x = 178,576.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.