Home / 231,620.38-347,490.47-135,638.65

Finding the Fourth Proportional to 231,620.38, 347,490.47 and 135,638.65

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Solution

The fourth proportional to 231,620.38, 347,490.47 and 135,638.65 is: 203,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,620.38 : 347,490.47 = 135,638.65 : x
  2. Step 2: Convert to fraction form
    231,620.38/347,490.47 = 135,638.65/x
  3. Step 3: Cross multiply
    231,620.38x = 347,490.47 × 135,638.65
  4. Step 4: Simplify right side
    231,620.38x = 47,133,137,709.04
  5. Step 5: Solve for x
    x = 47,133,137,709.04/231,620.38
  6. Step 6: Final answer
    x = 203,493.05

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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.