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Finding the Fourth Proportional to 543,674.97, 815,346 and 259,215.53

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Solution

The fourth proportional to 543,674.97, 815,346 and 259,215.53 is: 388,743.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,674.97 : 815,346 = 259,215.53 : x
  2. Step 2: Convert to fraction form
    543,674.97/815,346 = 259,215.53/x
  3. Step 3: Cross multiply
    543,674.97x = 815,346 × 259,215.53
  4. Step 4: Simplify right side
    543,674.97x = 211,350,341,446.65
  5. Step 5: Solve for x
    x = 211,350,341,446.65/543,674.97
  6. Step 6: Final answer
    x = 388,743.92

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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.