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Finding the Fourth Proportional to 225,478.53, 311,156.64 and 123,503.04

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Solution

The fourth proportional to 225,478.53, 311,156.64 and 123,503.04 is: 170,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,478.53 : 311,156.64 = 123,503.04 : x
  2. Step 2: Convert to fraction form
    225,478.53/311,156.64 = 123,503.04/x
  3. Step 3: Cross multiply
    225,478.53x = 311,156.64 × 123,503.04
  4. Step 4: Simplify right side
    225,478.53x = 38,428,790,956.19
  5. Step 5: Solve for x
    x = 38,428,790,956.19/225,478.53
  6. Step 6: Final answer
    x = 170,432.15

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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.