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Finding the Fourth Proportional to 300,685.38, 414,934.99 and 171,630.51

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Solution

The fourth proportional to 300,685.38, 414,934.99 and 171,630.51 is: 236,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,685.38 : 414,934.99 = 171,630.51 : x
  2. Step 2: Convert to fraction form
    300,685.38/414,934.99 = 171,630.51/x
  3. Step 3: Cross multiply
    300,685.38x = 414,934.99 × 171,630.51
  4. Step 4: Simplify right side
    300,685.38x = 71,215,501,965.46
  5. Step 5: Solve for x
    x = 71,215,501,965.46/300,685.38
  6. Step 6: Final answer
    x = 236,843.92

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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.