Home / 212,938.74-319,408.11-55,167.21

Finding the Fourth Proportional to 212,938.74, 319,408.11 and 55,167.21

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Solution

The fourth proportional to 212,938.74, 319,408.11 and 55,167.21 is: 82,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,938.74 : 319,408.11 = 55,167.21 : x
  2. Step 2: Convert to fraction form
    212,938.74/319,408.11 = 55,167.21/x
  3. Step 3: Cross multiply
    212,938.74x = 319,408.11 × 55,167.21
  4. Step 4: Simplify right side
    212,938.74x = 17,620,854,280.07
  5. Step 5: Solve for x
    x = 17,620,854,280.07/212,938.74
  6. Step 6: Final answer
    x = 82,750.82

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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.