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Finding the Fourth Proportional to 555,221.80, 766,206.33 and 300,572.98

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Solution

The fourth proportional to 555,221.80, 766,206.33 and 300,572.98 is: 414,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,221.80 : 766,206.33 = 300,572.98 : x
  2. Step 2: Convert to fraction form
    555,221.80/766,206.33 = 300,572.98/x
  3. Step 3: Cross multiply
    555,221.80x = 766,206.33 × 300,572.98
  4. Step 4: Simplify right side
    555,221.80x = 230,300,919,902.96
  5. Step 5: Solve for x
    x = 230,300,919,902.96/555,221.80
  6. Step 6: Final answer
    x = 414,790.85

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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.