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Finding the Fourth Proportional to 298,847.28, 448,115.40 and 88,456.80

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Solution

The fourth proportional to 298,847.28, 448,115.40 and 88,456.80 is: 132,639.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,847.28 : 448,115.40 = 88,456.80 : x
  2. Step 2: Convert to fraction form
    298,847.28/448,115.40 = 88,456.80/x
  3. Step 3: Cross multiply
    298,847.28x = 448,115.40 × 88,456.80
  4. Step 4: Simplify right side
    298,847.28x = 39,638,854,314.72
  5. Step 5: Solve for x
    x = 39,638,854,314.72/298,847.28
  6. Step 6: Final answer
    x = 132,639.17

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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.