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Finding the Fourth Proportional to 225,379.34, 311,022.35 and 123,402.94

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Solution

The fourth proportional to 225,379.34, 311,022.35 and 123,402.94 is: 170,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,379.34 : 311,022.35 = 123,402.94 : x
  2. Step 2: Convert to fraction form
    225,379.34/311,022.35 = 123,402.94/x
  3. Step 3: Cross multiply
    225,379.34x = 311,022.35 × 123,402.94
  4. Step 4: Simplify right side
    225,379.34x = 38,381,073,213.40
  5. Step 5: Solve for x
    x = 38,381,073,213.40/225,379.34
  6. Step 6: Final answer
    x = 170,295.44

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1.5x scale

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.