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Finding the Fourth Proportional to 298,009.29, 447,013.82 and 87,647.24

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Solution

The fourth proportional to 298,009.29, 447,013.82 and 87,647.24 is: 131,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,009.29 : 447,013.82 = 87,647.24 : x
  2. Step 2: Convert to fraction form
    298,009.29/447,013.82 = 87,647.24/x
  3. Step 3: Cross multiply
    298,009.29x = 447,013.82 × 87,647.24
  4. Step 4: Simplify right side
    298,009.29x = 39,179,524,891.55
  5. Step 5: Solve for x
    x = 39,179,524,891.55/298,009.29
  6. Step 6: Final answer
    x = 131,470.82

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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.