Home / 324,618.06-486,979.40-99,978.42

Finding the Fourth Proportional to 324,618.06, 486,979.40 and 99,978.42

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Solution

The fourth proportional to 324,618.06, 486,979.40 and 99,978.42 is: 149,983.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,618.06 : 486,979.40 = 99,978.42 : x
  2. Step 2: Convert to fraction form
    324,618.06/486,979.40 = 99,978.42/x
  3. Step 3: Cross multiply
    324,618.06x = 486,979.40 × 99,978.42
  4. Step 4: Simplify right side
    324,618.06x = 48,687,431,489.22
  5. Step 5: Solve for x
    x = 48,687,431,489.22/324,618.06
  6. Step 6: Final answer
    x = 149,983.74

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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.