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Finding the Fourth Proportional to 298,144.32, 447,062.40 and 87,755.04

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Solution

The fourth proportional to 298,144.32, 447,062.40 and 87,755.04 is: 131,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,144.32 : 447,062.40 = 87,755.04 : x
  2. Step 2: Convert to fraction form
    298,144.32/447,062.40 = 87,755.04/x
  3. Step 3: Cross multiply
    298,144.32x = 447,062.40 × 87,755.04
  4. Step 4: Simplify right side
    298,144.32x = 39,231,978,794.50
  5. Step 5: Solve for x
    x = 39,231,978,794.50/298,144.32
  6. Step 6: Final answer
    x = 131,587.21

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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.