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Finding the Fourth Proportional to 311,928.65, 467,892.90 and 122,478.29

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Solution

The fourth proportional to 311,928.65, 467,892.90 and 122,478.29 is: 183,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,928.65 : 467,892.90 = 122,478.29 : x
  2. Step 2: Convert to fraction form
    311,928.65/467,892.90 = 122,478.29/x
  3. Step 3: Cross multiply
    311,928.65x = 467,892.90 × 122,478.29
  4. Step 4: Simplify right side
    311,928.65x = 57,306,719,955.68
  5. Step 5: Solve for x
    x = 57,306,719,955.68/311,928.65
  6. Step 6: Final answer
    x = 183,717.40

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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.