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Finding the Fourth Proportional to 511,109.70, 767,020.28 and 211,591.85

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Solution

The fourth proportional to 511,109.70, 767,020.28 and 211,591.85 is: 317,535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,109.70 : 767,020.28 = 211,591.85 : x
  2. Step 2: Convert to fraction form
    511,109.70/767,020.28 = 211,591.85/x
  3. Step 3: Cross multiply
    511,109.70x = 767,020.28 × 211,591.85
  4. Step 4: Simplify right side
    511,109.70x = 162,295,235,139.66
  5. Step 5: Solve for x
    x = 162,295,235,139.66/511,109.70
  6. Step 6: Final answer
    x = 317,535.03

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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.