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Finding the Fourth Proportional to 543,903.85, 815,625.06 and 259,265.11

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Solution

The fourth proportional to 543,903.85, 815,625.06 and 259,265.11 is: 388,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,903.85 : 815,625.06 = 259,265.11 : x
  2. Step 2: Convert to fraction form
    543,903.85/815,625.06 = 259,265.11/x
  3. Step 3: Cross multiply
    543,903.85x = 815,625.06 × 259,265.11
  4. Step 4: Simplify right side
    543,903.85x = 211,463,120,899.66
  5. Step 5: Solve for x
    x = 211,463,120,899.66/543,903.85
  6. Step 6: Final answer
    x = 388,787.69

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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.