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Finding the Fourth Proportional to 298,418.73, 447,640.38 and 88,056.69

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Solution

The fourth proportional to 298,418.73, 447,640.38 and 88,056.69 is: 132,088.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,418.73 : 447,640.38 = 88,056.69 : x
  2. Step 2: Convert to fraction form
    298,418.73/447,640.38 = 88,056.69/x
  3. Step 3: Cross multiply
    298,418.73x = 447,640.38 × 88,056.69
  4. Step 4: Simplify right side
    298,418.73x = 39,417,730,173.14
  5. Step 5: Solve for x
    x = 39,417,730,173.14/298,418.73
  6. Step 6: Final answer
    x = 132,088.66

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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.