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Finding the Fourth Proportional to 324,010.60, 486,015.90 and 279,687.40

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Solution

The fourth proportional to 324,010.60, 486,015.90 and 279,687.40 is: 419,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,010.60 : 486,015.90 = 279,687.40 : x
  2. Step 2: Convert to fraction form
    324,010.60/486,015.90 = 279,687.40/x
  3. Step 3: Cross multiply
    324,010.60x = 486,015.90 × 279,687.40
  4. Step 4: Simplify right side
    324,010.60x = 135,932,523,429.66
  5. Step 5: Solve for x
    x = 135,932,523,429.66/324,010.60
  6. Step 6: Final answer
    x = 419,531.10

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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.