Home / 215,442.79-323,186.66-82,434.31

Finding the Fourth Proportional to 215,442.79, 323,186.66 and 82,434.31

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Solution

The fourth proportional to 215,442.79, 323,186.66 and 82,434.31 is: 123,660.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,442.79 : 323,186.66 = 82,434.31 : x
  2. Step 2: Convert to fraction form
    215,442.79/323,186.66 = 82,434.31/x
  3. Step 3: Cross multiply
    215,442.79x = 323,186.66 × 82,434.31
  4. Step 4: Simplify right side
    215,442.79x = 26,641,668,407.30
  5. Step 5: Solve for x
    x = 26,641,668,407.30/215,442.79
  6. Step 6: Final answer
    x = 123,660.06

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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.