Home / 272,529.09-408,859.07-85,540.59

Finding the Fourth Proportional to 272,529.09, 408,859.07 and 85,540.59

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Solution

The fourth proportional to 272,529.09, 408,859.07 and 85,540.59 is: 128,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,529.09 : 408,859.07 = 85,540.59 : x
  2. Step 2: Convert to fraction form
    272,529.09/408,859.07 = 85,540.59/x
  3. Step 3: Cross multiply
    272,529.09x = 408,859.07 × 85,540.59
  4. Step 4: Simplify right side
    272,529.09x = 34,974,045,646.95
  5. Step 5: Solve for x
    x = 34,974,045,646.95/272,529.09
  6. Step 6: Final answer
    x = 128,331.42

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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.