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Finding the Fourth Proportional to 215,862.40, 323,793.60 and 131,881.60

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Solution

The fourth proportional to 215,862.40, 323,793.60 and 131,881.60 is: 197,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,862.40 : 323,793.60 = 131,881.60 : x
  2. Step 2: Convert to fraction form
    215,862.40/323,793.60 = 131,881.60/x
  3. Step 3: Cross multiply
    215,862.40x = 323,793.60 × 131,881.60
  4. Step 4: Simplify right side
    215,862.40x = 42,702,418,037.76
  5. Step 5: Solve for x
    x = 42,702,418,037.76/215,862.40
  6. Step 6: Final answer
    x = 197,822.40

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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.