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Finding the Fourth Proportional to 298,981.20, 448,317.90 and 88,591.80

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Solution

The fourth proportional to 298,981.20, 448,317.90 and 88,591.80 is: 132,842.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,981.20 : 448,317.90 = 88,591.80 : x
  2. Step 2: Convert to fraction form
    298,981.20/448,317.90 = 88,591.80/x
  3. Step 3: Cross multiply
    298,981.20x = 448,317.90 × 88,591.80
  4. Step 4: Simplify right side
    298,981.20x = 39,717,289,733.22
  5. Step 5: Solve for x
    x = 39,717,289,733.22/298,981.20
  6. Step 6: Final answer
    x = 132,842.10

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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.