Home / 393,273.09-542,720.66-223,508.43

Finding the Fourth Proportional to 393,273.09, 542,720.66 and 223,508.43

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Solution

The fourth proportional to 393,273.09, 542,720.66 and 223,508.43 is: 308,443.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,273.09 : 542,720.66 = 223,508.43 : x
  2. Step 2: Convert to fraction form
    393,273.09/542,720.66 = 223,508.43/x
  3. Step 3: Cross multiply
    393,273.09x = 542,720.66 × 223,508.43
  4. Step 4: Simplify right side
    393,273.09x = 121,302,641,527.62
  5. Step 5: Solve for x
    x = 121,302,641,527.62/393,273.09
  6. Step 6: Final answer
    x = 308,443.79

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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.