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Finding the Fourth Proportional to 453,086.38, 679,180.60 and 212,770.09

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Solution

The fourth proportional to 453,086.38, 679,180.60 and 212,770.09 is: 318,944.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,086.38 : 679,180.60 = 212,770.09 : x
  2. Step 2: Convert to fraction form
    453,086.38/679,180.60 = 212,770.09/x
  3. Step 3: Cross multiply
    453,086.38x = 679,180.60 × 212,770.09
  4. Step 4: Simplify right side
    453,086.38x = 144,509,317,306.36
  5. Step 5: Solve for x
    x = 144,509,317,306.36/453,086.38
  6. Step 6: Final answer
    x = 318,944.29

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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.