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Finding the Fourth Proportional to 215,710.10, 323,565.15 and 203,462.90

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Solution

The fourth proportional to 215,710.10, 323,565.15 and 203,462.90 is: 305,194.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,710.10 : 323,565.15 = 203,462.90 : x
  2. Step 2: Convert to fraction form
    215,710.10/323,565.15 = 203,462.90/x
  3. Step 3: Cross multiply
    215,710.10x = 323,565.15 × 203,462.90
  4. Step 4: Simplify right side
    215,710.10x = 65,833,503,757.94
  5. Step 5: Solve for x
    x = 65,833,503,757.94/215,710.10
  6. Step 6: Final answer
    x = 305,194.35

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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.