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Finding the Fourth Proportional to 378,813.43, 567,531.03 and 220,562.11

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Solution

The fourth proportional to 378,813.43, 567,531.03 and 220,562.11 is: 330,441.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,813.43 : 567,531.03 = 220,562.11 : x
  2. Step 2: Convert to fraction form
    378,813.43/567,531.03 = 220,562.11/x
  3. Step 3: Cross multiply
    378,813.43x = 567,531.03 × 220,562.11
  4. Step 4: Simplify right side
    378,813.43x = 125,175,841,467.27
  5. Step 5: Solve for x
    x = 125,175,841,467.27/378,813.43
  6. Step 6: Final answer
    x = 330,441.93

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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.