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Finding the Fourth Proportional to 340,679.46, 511,081.14 and 140,891.34

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Solution

The fourth proportional to 340,679.46, 511,081.14 and 140,891.34 is: 211,362.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,679.46 : 511,081.14 = 140,891.34 : x
  2. Step 2: Convert to fraction form
    340,679.46/511,081.14 = 140,891.34/x
  3. Step 3: Cross multiply
    340,679.46x = 511,081.14 × 140,891.34
  4. Step 4: Simplify right side
    340,679.46x = 72,006,906,663.33
  5. Step 5: Solve for x
    x = 72,006,906,663.33/340,679.46
  6. Step 6: Final answer
    x = 211,362.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.