Home / 212,939.27-319,630.44-156,842.72

Finding the Fourth Proportional to 212,939.27, 319,630.44 and 156,842.72

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Solution

The fourth proportional to 212,939.27, 319,630.44 and 156,842.72 is: 235,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,939.27 : 319,630.44 = 156,842.72 : x
  2. Step 2: Convert to fraction form
    212,939.27/319,630.44 = 156,842.72/x
  3. Step 3: Cross multiply
    212,939.27x = 319,630.44 × 156,842.72
  4. Step 4: Simplify right side
    212,939.27x = 50,131,707,604.40
  5. Step 5: Solve for x
    x = 50,131,707,604.40/212,939.27
  6. Step 6: Final answer
    x = 235,427.25

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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.