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Finding the Fourth Proportional to 225,490.48, 311,165.80 and 123,516.39

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Solution

The fourth proportional to 225,490.48, 311,165.80 and 123,516.39 is: 170,446.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,490.48 : 311,165.80 = 123,516.39 : x
  2. Step 2: Convert to fraction form
    225,490.48/311,165.80 = 123,516.39/x
  3. Step 3: Cross multiply
    225,490.48x = 311,165.80 × 123,516.39
  4. Step 4: Simplify right side
    225,490.48x = 38,434,077,860.32
  5. Step 5: Solve for x
    x = 38,434,077,860.32/225,490.48
  6. Step 6: Final answer
    x = 170,446.57

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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.