Home / 215,972.10-323,958.15-103,633.20

Finding the Fourth Proportional to 215,972.10, 323,958.15 and 103,633.20

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Solution

The fourth proportional to 215,972.10, 323,958.15 and 103,633.20 is: 155,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,972.10 : 323,958.15 = 103,633.20 : x
  2. Step 2: Convert to fraction form
    215,972.10/323,958.15 = 103,633.20/x
  3. Step 3: Cross multiply
    215,972.10x = 323,958.15 × 103,633.20
  4. Step 4: Simplify right side
    215,972.10x = 33,572,819,750.58
  5. Step 5: Solve for x
    x = 33,572,819,750.58/215,972.10
  6. Step 6: Final answer
    x = 155,449.80

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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.