Home / 213,917.52-319,576.20-138,422.64

Finding the Fourth Proportional to 213,917.52, 319,576.20 and 138,422.64

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Solution

The fourth proportional to 213,917.52, 319,576.20 and 138,422.64 is: 206,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,917.52 : 319,576.20 = 138,422.64 : x
  2. Step 2: Convert to fraction form
    213,917.52/319,576.20 = 138,422.64/x
  3. Step 3: Cross multiply
    213,917.52x = 319,576.20 × 138,422.64
  4. Step 4: Simplify right side
    213,917.52x = 44,236,581,285.17
  5. Step 5: Solve for x
    x = 44,236,581,285.17/213,917.52
  6. Step 6: Final answer
    x = 206,792.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.