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Finding the Fourth Proportional to 555,550.80, 766,661.28 and 300,902

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Solution

The fourth proportional to 555,550.80, 766,661.28 and 300,902 is: 415,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,550.80 : 766,661.28 = 300,902 : x
  2. Step 2: Convert to fraction form
    555,550.80/766,661.28 = 300,902/x
  3. Step 3: Cross multiply
    555,550.80x = 766,661.28 × 300,902
  4. Step 4: Simplify right side
    555,550.80x = 230,689,912,474.56
  5. Step 5: Solve for x
    x = 230,689,912,474.56/555,550.80
  6. Step 6: Final answer
    x = 415,245.40

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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.