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Finding the Fourth Proportional to 217,920.42, 300,754.53 and 131,926.79

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Solution

The fourth proportional to 217,920.42, 300,754.53 and 131,926.79 is: 182,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,920.42 : 300,754.53 = 131,926.79 : x
  2. Step 2: Convert to fraction form
    217,920.42/300,754.53 = 131,926.79/x
  3. Step 3: Cross multiply
    217,920.42x = 300,754.53 × 131,926.79
  4. Step 4: Simplify right side
    217,920.42x = 39,677,578,217.09
  5. Step 5: Solve for x
    x = 39,677,578,217.09/217,920.42
  6. Step 6: Final answer
    x = 182,073.70

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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.