Home / 212,840.19-319,251.06-52,912.78

Finding the Fourth Proportional to 212,840.19, 319,251.06 and 52,912.78

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Solution

The fourth proportional to 212,840.19, 319,251.06 and 52,912.78 is: 79,366.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,840.19 : 319,251.06 = 52,912.78 : x
  2. Step 2: Convert to fraction form
    212,840.19/319,251.06 = 52,912.78/x
  3. Step 3: Cross multiply
    212,840.19x = 319,251.06 × 52,912.78
  4. Step 4: Simplify right side
    212,840.19x = 16,892,460,304.42
  5. Step 5: Solve for x
    x = 16,892,460,304.42/212,840.19
  6. Step 6: Final answer
    x = 79,366.87

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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.