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Finding the Fourth Proportional to 296,640.78, 444,957.30 and 72,003

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Solution

The fourth proportional to 296,640.78, 444,957.30 and 72,003 is: 108,003.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,640.78 : 444,957.30 = 72,003 : x
  2. Step 2: Convert to fraction form
    296,640.78/444,957.30 = 72,003/x
  3. Step 3: Cross multiply
    296,640.78x = 444,957.30 × 72,003
  4. Step 4: Simplify right side
    296,640.78x = 32,038,260,471.90
  5. Step 5: Solve for x
    x = 32,038,260,471.90/296,640.78
  6. Step 6: Final answer
    x = 108,003.56

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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.