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Finding the Fourth Proportional to 221,063.98, 331,279.14 and 126,097.66

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Solution

The fourth proportional to 221,063.98, 331,279.14 and 126,097.66 is: 188,965.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,063.98 : 331,279.14 = 126,097.66 : x
  2. Step 2: Convert to fraction form
    221,063.98/331,279.14 = 126,097.66/x
  3. Step 3: Cross multiply
    221,063.98x = 331,279.14 × 126,097.66
  4. Step 4: Simplify right side
    221,063.98x = 41,773,524,360.81
  5. Step 5: Solve for x
    x = 41,773,524,360.81/221,063.98
  6. Step 6: Final answer
    x = 188,965.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.