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Finding the Fourth Proportional to 279,997.60, 419,996.40 and 168,023.20

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Solution

The fourth proportional to 279,997.60, 419,996.40 and 168,023.20 is: 252,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,997.60 : 419,996.40 = 168,023.20 : x
  2. Step 2: Convert to fraction form
    279,997.60/419,996.40 = 168,023.20/x
  3. Step 3: Cross multiply
    279,997.60x = 419,996.40 × 168,023.20
  4. Step 4: Simplify right side
    279,997.60x = 70,569,139,116.48
  5. Step 5: Solve for x
    x = 70,569,139,116.48/279,997.60
  6. Step 6: Final answer
    x = 252,034.80

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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.