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Finding the Fourth Proportional to 555,208.20, 766,189.71 and 300,559.38

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Solution

The fourth proportional to 555,208.20, 766,189.71 and 300,559.38 is: 414,773.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,208.20 : 766,189.71 = 300,559.38 : x
  2. Step 2: Convert to fraction form
    555,208.20/766,189.71 = 300,559.38/x
  3. Step 3: Cross multiply
    555,208.20x = 766,189.71 × 300,559.38
  4. Step 4: Simplify right side
    555,208.20x = 230,285,504,199.98
  5. Step 5: Solve for x
    x = 230,285,504,199.98/555,208.20
  6. Step 6: Final answer
    x = 414,773.24

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1.5x scale

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.