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Finding the Fourth Proportional to 296,920.96, 445,375.20 and 72,282.60

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Solution

The fourth proportional to 296,920.96, 445,375.20 and 72,282.60 is: 108,422.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,920.96 : 445,375.20 = 72,282.60 : x
  2. Step 2: Convert to fraction form
    296,920.96/445,375.20 = 72,282.60/x
  3. Step 3: Cross multiply
    296,920.96x = 445,375.20 × 72,282.60
  4. Step 4: Simplify right side
    296,920.96x = 32,192,877,431.52
  5. Step 5: Solve for x
    x = 32,192,877,431.52/296,920.96
  6. Step 6: Final answer
    x = 108,422.38

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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.