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Finding the Fourth Proportional to 311,863.03, 430,353.31 and 175,888.85

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Solution

The fourth proportional to 311,863.03, 430,353.31 and 175,888.85 is: 242,716.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,863.03 : 430,353.31 = 175,888.85 : x
  2. Step 2: Convert to fraction form
    311,863.03/430,353.31 = 175,888.85/x
  3. Step 3: Cross multiply
    311,863.03x = 430,353.31 × 175,888.85
  4. Step 4: Simplify right side
    311,863.03x = 75,694,347,273.99
  5. Step 5: Solve for x
    x = 75,694,347,273.99/311,863.03
  6. Step 6: Final answer
    x = 242,716.64

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1.5x scale

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.