Home / 395,028.72-545,139.28-222,982.90

Finding the Fourth Proportional to 395,028.72, 545,139.28 and 222,982.90

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Solution

The fourth proportional to 395,028.72, 545,139.28 and 222,982.90 is: 307,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,028.72 : 545,139.28 = 222,982.90 : x
  2. Step 2: Convert to fraction form
    395,028.72/545,139.28 = 222,982.90/x
  3. Step 3: Cross multiply
    395,028.72x = 545,139.28 × 222,982.90
  4. Step 4: Simplify right side
    395,028.72x = 121,556,736,474.19
  5. Step 5: Solve for x
    x = 121,556,736,474.19/395,028.72
  6. Step 6: Final answer
    x = 307,716.20

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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.