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Finding the Fourth Proportional to 215,737.20, 323,682.60 and 208,057.20

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Solution

The fourth proportional to 215,737.20, 323,682.60 and 208,057.20 is: 312,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,737.20 : 323,682.60 = 208,057.20 : x
  2. Step 2: Convert to fraction form
    215,737.20/323,682.60 = 208,057.20/x
  3. Step 3: Cross multiply
    215,737.20x = 323,682.60 × 208,057.20
  4. Step 4: Simplify right side
    215,737.20x = 67,344,495,444.72
  5. Step 5: Solve for x
    x = 67,344,495,444.72/215,737.20
  6. Step 6: Final answer
    x = 312,159.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.