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Finding the Fourth Proportional to 231,270.80, 319,036.79 and 154,793.09

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Solution

The fourth proportional to 231,270.80, 319,036.79 and 154,793.09 is: 213,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,270.80 : 319,036.79 = 154,793.09 : x
  2. Step 2: Convert to fraction form
    231,270.80/319,036.79 = 154,793.09/x
  3. Step 3: Cross multiply
    231,270.80x = 319,036.79 × 154,793.09
  4. Step 4: Simplify right side
    231,270.80x = 49,384,691,732.36
  5. Step 5: Solve for x
    x = 49,384,691,732.36/231,270.80
  6. Step 6: Final answer
    x = 213,536.22

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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.