Home / 543,642.26-815,140.38-206,707.56

Finding the Fourth Proportional to 543,642.26, 815,140.38 and 206,707.56

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Solution

The fourth proportional to 543,642.26, 815,140.38 and 206,707.56 is: 309,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,642.26 : 815,140.38 = 206,707.56 : x
  2. Step 2: Convert to fraction form
    543,642.26/815,140.38 = 206,707.56/x
  3. Step 3: Cross multiply
    543,642.26x = 815,140.38 × 206,707.56
  4. Step 4: Simplify right side
    543,642.26x = 168,495,679,007.27
  5. Step 5: Solve for x
    x = 168,495,679,007.27/543,642.26
  6. Step 6: Final answer
    x = 309,938.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.