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Finding the Fourth Proportional to 298,979.20, 448,314.90 and 88,589.80

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Solution

The fourth proportional to 298,979.20, 448,314.90 and 88,589.80 is: 132,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,979.20 : 448,314.90 = 88,589.80 : x
  2. Step 2: Convert to fraction form
    298,979.20/448,314.90 = 88,589.80/x
  3. Step 3: Cross multiply
    298,979.20x = 448,314.90 × 88,589.80
  4. Step 4: Simplify right side
    298,979.20x = 39,716,127,328.02
  5. Step 5: Solve for x
    x = 39,716,127,328.02/298,979.20
  6. Step 6: Final answer
    x = 132,839.10

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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.