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Finding the Fourth Proportional to 212,779.31, 318,227.87 and 189,251.97

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Solution

The fourth proportional to 212,779.31, 318,227.87 and 189,251.97 is: 283,040.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,779.31 : 318,227.87 = 189,251.97 : x
  2. Step 2: Convert to fraction form
    212,779.31/318,227.87 = 189,251.97/x
  3. Step 3: Cross multiply
    212,779.31x = 318,227.87 × 189,251.97
  4. Step 4: Simplify right side
    212,779.31x = 60,225,250,360.14
  5. Step 5: Solve for x
    x = 60,225,250,360.14/212,779.31
  6. Step 6: Final answer
    x = 283,040.92

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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.