Home / 212,943.10-319,414.65-156,955.90

Finding the Fourth Proportional to 212,943.10, 319,414.65 and 156,955.90

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Solution

The fourth proportional to 212,943.10, 319,414.65 and 156,955.90 is: 235,433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,943.10 : 319,414.65 = 156,955.90 : x
  2. Step 2: Convert to fraction form
    212,943.10/319,414.65 = 156,955.90/x
  3. Step 3: Cross multiply
    212,943.10x = 319,414.65 × 156,955.90
  4. Step 4: Simplify right side
    212,943.10x = 50,134,013,863.94
  5. Step 5: Solve for x
    x = 50,134,013,863.94/212,943.10
  6. Step 6: Final answer
    x = 235,433.85

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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.