Home / 391,941.56-540,868.92-222,175.28

Finding the Fourth Proportional to 391,941.56, 540,868.92 and 222,175.28

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Solution

The fourth proportional to 391,941.56, 540,868.92 and 222,175.28 is: 306,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,941.56 : 540,868.92 = 222,175.28 : x
  2. Step 2: Convert to fraction form
    391,941.56/540,868.92 = 222,175.28/x
  3. Step 3: Cross multiply
    391,941.56x = 540,868.92 × 222,175.28
  4. Step 4: Simplify right side
    391,941.56x = 120,167,703,744.30
  5. Step 5: Solve for x
    x = 120,167,703,744.30/391,941.56
  6. Step 6: Final answer
    x = 306,595.97

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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.