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Finding the Fourth Proportional to 543,614.40, 815,061.68 and 259,348.82

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Solution

The fourth proportional to 543,614.40, 815,061.68 and 259,348.82 is: 388,851.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,614.40 : 815,061.68 = 259,348.82 : x
  2. Step 2: Convert to fraction form
    543,614.40/815,061.68 = 259,348.82/x
  3. Step 3: Cross multiply
    543,614.40x = 815,061.68 × 259,348.82
  4. Step 4: Simplify right side
    543,614.40x = 211,385,283,962.66
  5. Step 5: Solve for x
    x = 211,385,283,962.66/543,614.40
  6. Step 6: Final answer
    x = 388,851.52

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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.