Home / 393,279.09-542,728.95-223,514.43

Finding the Fourth Proportional to 393,279.09, 542,728.95 and 223,514.43

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Solution

The fourth proportional to 393,279.09, 542,728.95 and 223,514.43 is: 308,452.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,279.09 : 542,728.95 = 223,514.43 : x
  2. Step 2: Convert to fraction form
    393,279.09/542,728.95 = 223,514.43/x
  3. Step 3: Cross multiply
    393,279.09x = 542,728.95 × 223,514.43
  4. Step 4: Simplify right side
    393,279.09x = 121,307,751,903.75
  5. Step 5: Solve for x
    x = 121,307,751,903.75/393,279.09
  6. Step 6: Final answer
    x = 308,452.08

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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.