Home / 392,976.12-542,308.86-223,219.56

Finding the Fourth Proportional to 392,976.12, 542,308.86 and 223,219.56

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Solution

The fourth proportional to 392,976.12, 542,308.86 and 223,219.56 is: 308,044.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,976.12 : 542,308.86 = 223,219.56 : x
  2. Step 2: Convert to fraction form
    392,976.12/542,308.86 = 223,219.56/x
  3. Step 3: Cross multiply
    392,976.12x = 542,308.86 × 223,219.56
  4. Step 4: Simplify right side
    392,976.12x = 121,053,945,113.30
  5. Step 5: Solve for x
    x = 121,053,945,113.30/392,976.12
  6. Step 6: Final answer
    x = 308,044.02

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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.