Home / 393,072.26-542,441.52-223,315.70

Finding the Fourth Proportional to 393,072.26, 542,441.52 and 223,315.70

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Solution

The fourth proportional to 393,072.26, 542,441.52 and 223,315.70 is: 308,176.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,072.26 : 542,441.52 = 223,315.70 : x
  2. Step 2: Convert to fraction form
    393,072.26/542,441.52 = 223,315.70/x
  3. Step 3: Cross multiply
    393,072.26x = 542,441.52 × 223,315.70
  4. Step 4: Simplify right side
    393,072.26x = 121,135,707,747.86
  5. Step 5: Solve for x
    x = 121,135,707,747.86/393,072.26
  6. Step 6: Final answer
    x = 308,176.69

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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.