Home / 393,508.52-542,986.98-223,723.88

Finding the Fourth Proportional to 393,508.52, 542,986.98 and 223,723.88

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Solution

The fourth proportional to 393,508.52, 542,986.98 and 223,723.88 is: 308,707.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,508.52 : 542,986.98 = 223,723.88 : x
  2. Step 2: Convert to fraction form
    393,508.52/542,986.98 = 223,723.88/x
  3. Step 3: Cross multiply
    393,508.52x = 542,986.98 × 223,723.88
  4. Step 4: Simplify right side
    393,508.52x = 121,479,153,955.08
  5. Step 5: Solve for x
    x = 121,479,153,955.08/393,508.52
  6. Step 6: Final answer
    x = 308,707.81

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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.