Home / 285,379.38-428,069.07-75,016.98

Finding the Fourth Proportional to 285,379.38, 428,069.07 and 75,016.98

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Solution

The fourth proportional to 285,379.38, 428,069.07 and 75,016.98 is: 112,525.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,379.38 : 428,069.07 = 75,016.98 : x
  2. Step 2: Convert to fraction form
    285,379.38/428,069.07 = 75,016.98/x
  3. Step 3: Cross multiply
    285,379.38x = 428,069.07 × 75,016.98
  4. Step 4: Simplify right side
    285,379.38x = 32,112,448,862.81
  5. Step 5: Solve for x
    x = 32,112,448,862.81/285,379.38
  6. Step 6: Final answer
    x = 112,525.47

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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.