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Finding the Fourth Proportional to 305,227.38, 421,235.38 and 169,274.35

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Solution

The fourth proportional to 305,227.38, 421,235.38 and 169,274.35 is: 233,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,227.38 : 421,235.38 = 169,274.35 : x
  2. Step 2: Convert to fraction form
    305,227.38/421,235.38 = 169,274.35/x
  3. Step 3: Cross multiply
    305,227.38x = 421,235.38 × 169,274.35
  4. Step 4: Simplify right side
    305,227.38x = 71,304,345,146.50
  5. Step 5: Solve for x
    x = 71,304,345,146.50/305,227.38
  6. Step 6: Final answer
    x = 233,610.58

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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.