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Finding the Fourth Proportional to 225,379.98, 311,014.76 and 123,403.59

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Solution

The fourth proportional to 225,379.98, 311,014.76 and 123,403.59 is: 170,291.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,379.98 : 311,014.76 = 123,403.59 : x
  2. Step 2: Convert to fraction form
    225,379.98/311,014.76 = 123,403.59/x
  3. Step 3: Cross multiply
    225,379.98x = 311,014.76 × 123,403.59
  4. Step 4: Simplify right side
    225,379.98x = 38,380,337,309.97
  5. Step 5: Solve for x
    x = 38,380,337,309.97/225,379.98
  6. Step 6: Final answer
    x = 170,291.69

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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.