Home / 391,869.09-540,779.49-222,104.43

Finding the Fourth Proportional to 391,869.09, 540,779.49 and 222,104.43

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Solution

The fourth proportional to 391,869.09, 540,779.49 and 222,104.43 is: 306,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,869.09 : 540,779.49 = 222,104.43 : x
  2. Step 2: Convert to fraction form
    391,869.09/540,779.49 = 222,104.43/x
  3. Step 3: Cross multiply
    391,869.09x = 540,779.49 × 222,104.43
  4. Step 4: Simplify right side
    391,869.09x = 120,109,520,382.14
  5. Step 5: Solve for x
    x = 120,109,520,382.14/391,869.09
  6. Step 6: Final answer
    x = 306,504.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.