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Finding the Fourth Proportional to 225,615.17, 311,349.30 and 123,624.43

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Solution

The fourth proportional to 225,615.17, 311,349.30 and 123,624.43 is: 170,601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,615.17 : 311,349.30 = 123,624.43 : x
  2. Step 2: Convert to fraction form
    225,615.17/311,349.30 = 123,624.43/x
  3. Step 3: Cross multiply
    225,615.17x = 311,349.30 × 123,624.43
  4. Step 4: Simplify right side
    225,615.17x = 38,490,379,743.40
  5. Step 5: Solve for x
    x = 38,490,379,743.40/225,615.17
  6. Step 6: Final answer
    x = 170,601.91

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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.