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Finding the Fourth Proportional to 235,470.72, 324,785.76 and 154,872.96

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Solution

The fourth proportional to 235,470.72, 324,785.76 and 154,872.96 is: 213,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,470.72 : 324,785.76 = 154,872.96 : x
  2. Step 2: Convert to fraction form
    235,470.72/324,785.76 = 154,872.96/x
  3. Step 3: Cross multiply
    235,470.72x = 324,785.76 × 154,872.96
  4. Step 4: Simplify right side
    235,470.72x = 50,300,532,017.05
  5. Step 5: Solve for x
    x = 50,300,532,017.05/235,470.72
  6. Step 6: Final answer
    x = 213,616.93

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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.