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Finding the Fourth Proportional to 217,998.04, 300,839.28 and 131,959

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Solution

The fourth proportional to 217,998.04, 300,839.28 and 131,959 is: 182,104.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,998.04 : 300,839.28 = 131,959 : x
  2. Step 2: Convert to fraction form
    217,998.04/300,839.28 = 131,959/x
  3. Step 3: Cross multiply
    217,998.04x = 300,839.28 × 131,959
  4. Step 4: Simplify right side
    217,998.04x = 39,698,450,549.52
  5. Step 5: Solve for x
    x = 39,698,450,549.52/217,998.04
  6. Step 6: Final answer
    x = 182,104.62

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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.