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Finding the Fourth Proportional to 324,628.06, 486,994.41 and 99,988.42

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Solution

The fourth proportional to 324,628.06, 486,994.41 and 99,988.42 is: 149,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,628.06 : 486,994.41 = 99,988.42 : x
  2. Step 2: Convert to fraction form
    324,628.06/486,994.41 = 99,988.42/x
  3. Step 3: Cross multiply
    324,628.06x = 486,994.41 × 99,988.42
  4. Step 4: Simplify right side
    324,628.06x = 48,693,801,604.73
  5. Step 5: Solve for x
    x = 48,693,801,604.73/324,628.06
  6. Step 6: Final answer
    x = 149,998.75

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Similar ratio
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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.