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Finding the Fourth Proportional to 217,572.84, 300,245.72 and 120,770.97

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Solution

The fourth proportional to 217,572.84, 300,245.72 and 120,770.97 is: 166,661.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,572.84 : 300,245.72 = 120,770.97 : x
  2. Step 2: Convert to fraction form
    217,572.84/300,245.72 = 120,770.97/x
  3. Step 3: Cross multiply
    217,572.84x = 300,245.72 × 120,770.97
  4. Step 4: Simplify right side
    217,572.84x = 36,260,966,238.89
  5. Step 5: Solve for x
    x = 36,260,966,238.89/217,572.84
  6. Step 6: Final answer
    x = 166,661.27

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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.