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Finding the Fourth Proportional to 284,410.18, 426,640.79 and 74,049.94

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Solution

The fourth proportional to 284,410.18, 426,640.79 and 74,049.94 is: 111,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,410.18 : 426,640.79 = 74,049.94 : x
  2. Step 2: Convert to fraction form
    284,410.18/426,640.79 = 74,049.94/x
  3. Step 3: Cross multiply
    284,410.18x = 426,640.79 × 74,049.94
  4. Step 4: Simplify right side
    284,410.18x = 31,592,726,152.78
  5. Step 5: Solve for x
    x = 31,592,726,152.78/284,410.18
  6. Step 6: Final answer
    x = 111,081.56

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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.