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Finding the Fourth Proportional to 296,687.48, 445,025.05 and 72,049.09

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Solution

The fourth proportional to 296,687.48, 445,025.05 and 72,049.09 is: 108,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,687.48 : 445,025.05 = 72,049.09 : x
  2. Step 2: Convert to fraction form
    296,687.48/445,025.05 = 72,049.09/x
  3. Step 3: Cross multiply
    296,687.48x = 445,025.05 × 72,049.09
  4. Step 4: Simplify right side
    296,687.48x = 32,063,648,587.02
  5. Step 5: Solve for x
    x = 32,063,648,587.02/296,687.48
  6. Step 6: Final answer
    x = 108,072.13

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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.