Home / 392,829.48-542,086.02-223,041

Finding the Fourth Proportional to 392,829.48, 542,086.02 and 223,041

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Solution

The fourth proportional to 392,829.48, 542,086.02 and 223,041 is: 307,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,829.48 : 542,086.02 = 223,041 : x
  2. Step 2: Convert to fraction form
    392,829.48/542,086.02 = 223,041/x
  3. Step 3: Cross multiply
    392,829.48x = 542,086.02 × 223,041
  4. Step 4: Simplify right side
    392,829.48x = 120,907,407,986.82
  5. Step 5: Solve for x
    x = 120,907,407,986.82/392,829.48
  6. Step 6: Final answer
    x = 307,785.98

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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.