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Finding the Fourth Proportional to 555,221.25, 766,207.80 and 300,572.43

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Solution

The fourth proportional to 555,221.25, 766,207.80 and 300,572.43 is: 414,791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,221.25 : 766,207.80 = 300,572.43 : x
  2. Step 2: Convert to fraction form
    555,221.25/766,207.80 = 300,572.43/x
  3. Step 3: Cross multiply
    555,221.25x = 766,207.80 × 300,572.43
  4. Step 4: Simplify right side
    555,221.25x = 230,300,940,330.95
  5. Step 5: Solve for x
    x = 230,300,940,330.95/555,221.25
  6. Step 6: Final answer
    x = 414,791.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.