Home / 230,787.20-318,502.40-128,832.57

Finding the Fourth Proportional to 230,787.20, 318,502.40 and 128,832.57

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Solution

The fourth proportional to 230,787.20, 318,502.40 and 128,832.57 is: 177,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,787.20 : 318,502.40 = 128,832.57 : x
  2. Step 2: Convert to fraction form
    230,787.20/318,502.40 = 128,832.57/x
  3. Step 3: Cross multiply
    230,787.20x = 318,502.40 × 128,832.57
  4. Step 4: Simplify right side
    230,787.20x = 41,033,482,099.01
  5. Step 5: Solve for x
    x = 41,033,482,099.01/230,787.20
  6. Step 6: Final answer
    x = 177,797.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.