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Finding the Fourth Proportional to 215,800.86, 322,871.85 and 131,545.74

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Solution

The fourth proportional to 215,800.86, 322,871.85 and 131,545.74 is: 196,813.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,800.86 : 322,871.85 = 131,545.74 : x
  2. Step 2: Convert to fraction form
    215,800.86/322,871.85 = 131,545.74/x
  3. Step 3: Cross multiply
    215,800.86x = 322,871.85 × 131,545.74
  4. Step 4: Simplify right side
    215,800.86x = 42,472,416,433.42
  5. Step 5: Solve for x
    x = 42,472,416,433.42/215,800.86
  6. Step 6: Final answer
    x = 196,813.01

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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.