Home / 215,540.34-323,319.42-82,430.34

Finding the Fourth Proportional to 215,540.34, 323,319.42 and 82,430.34

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Solution

The fourth proportional to 215,540.34, 323,319.42 and 82,430.34 is: 123,648.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,540.34 : 323,319.42 = 82,430.34 : x
  2. Step 2: Convert to fraction form
    215,540.34/323,319.42 = 82,430.34/x
  3. Step 3: Cross multiply
    215,540.34x = 323,319.42 × 82,430.34
  4. Step 4: Simplify right side
    215,540.34x = 26,651,329,719.20
  5. Step 5: Solve for x
    x = 26,651,329,719.20/215,540.34
  6. Step 6: Final answer
    x = 123,648.92

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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.