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Finding the Fourth Proportional to 298,997.20, 448,517.40 and 99,456.40

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Solution

The fourth proportional to 298,997.20, 448,517.40 and 99,456.40 is: 149,191.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,997.20 : 448,517.40 = 99,456.40 : x
  2. Step 2: Convert to fraction form
    298,997.20/448,517.40 = 99,456.40/x
  3. Step 3: Cross multiply
    298,997.20x = 448,517.40 × 99,456.40
  4. Step 4: Simplify right side
    298,997.20x = 44,607,925,941.36
  5. Step 5: Solve for x
    x = 44,607,925,941.36/298,997.20
  6. Step 6: Final answer
    x = 149,191.78

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1.5x scale

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.