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Finding the Fourth Proportional to 304,982.32, 420,876.66 and 169,018.54

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Solution

The fourth proportional to 304,982.32, 420,876.66 and 169,018.54 is: 233,246.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,982.32 : 420,876.66 = 169,018.54 : x
  2. Step 2: Convert to fraction form
    304,982.32/420,876.66 = 169,018.54/x
  3. Step 3: Cross multiply
    304,982.32x = 420,876.66 × 169,018.54
  4. Step 4: Simplify right side
    304,982.32x = 71,135,958,593.28
  5. Step 5: Solve for x
    x = 71,135,958,593.28/304,982.32
  6. Step 6: Final answer
    x = 233,246.17

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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.