Home / 324,040.07-486,060.16-87,382.78

Finding the Fourth Proportional to 324,040.07, 486,060.16 and 87,382.78

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Solution

The fourth proportional to 324,040.07, 486,060.16 and 87,382.78 is: 131,074.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,040.07 : 486,060.16 = 87,382.78 : x
  2. Step 2: Convert to fraction form
    324,040.07/486,060.16 = 87,382.78/x
  3. Step 3: Cross multiply
    324,040.07x = 486,060.16 × 87,382.78
  4. Step 4: Simplify right side
    324,040.07x = 42,473,286,758.28
  5. Step 5: Solve for x
    x = 42,473,286,758.28/324,040.07
  6. Step 6: Final answer
    x = 131,074.18

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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.