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Finding the Fourth Proportional to 252,606.44, 378,653.27 and 215,737.72

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Solution

The fourth proportional to 252,606.44, 378,653.27 and 215,737.72 is: 323,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,606.44 : 378,653.27 = 215,737.72 : x
  2. Step 2: Convert to fraction form
    252,606.44/378,653.27 = 215,737.72/x
  3. Step 3: Cross multiply
    252,606.44x = 378,653.27 × 215,737.72
  4. Step 4: Simplify right side
    252,606.44x = 81,689,791,115.02
  5. Step 5: Solve for x
    x = 81,689,791,115.02/252,606.44
  6. Step 6: Final answer
    x = 323,387.60

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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.