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Finding the Fourth Proportional to 279,939.60, 419,909.40 and 167,965.20

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Solution

The fourth proportional to 279,939.60, 419,909.40 and 167,965.20 is: 251,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939.60 : 419,909.40 = 167,965.20 : x
  2. Step 2: Convert to fraction form
    279,939.60/419,909.40 = 167,965.20/x
  3. Step 3: Cross multiply
    279,939.60x = 419,909.40 × 167,965.20
  4. Step 4: Simplify right side
    279,939.60x = 70,530,166,352.88
  5. Step 5: Solve for x
    x = 70,530,166,352.88/279,939.60
  6. Step 6: Final answer
    x = 251,947.80

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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.