Home / 212,137.31-318,789.18-198,266.87

Finding the Fourth Proportional to 212,137.31, 318,789.18 and 198,266.87

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Solution

The fourth proportional to 212,137.31, 318,789.18 and 198,266.87 is: 297,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,137.31 : 318,789.18 = 198,266.87 : x
  2. Step 2: Convert to fraction form
    212,137.31/318,789.18 = 198,266.87/x
  3. Step 3: Cross multiply
    212,137.31x = 318,789.18 × 198,266.87
  4. Step 4: Simplify right side
    212,137.31x = 63,205,331,314.52
  5. Step 5: Solve for x
    x = 63,205,331,314.52/212,137.31
  6. Step 6: Final answer
    x = 297,945.39

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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.