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Finding the Fourth Proportional to 304,987.23, 420,876.33 and 169,018.37

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Solution

The fourth proportional to 304,987.23, 420,876.33 and 169,018.37 is: 233,241.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,987.23 : 420,876.33 = 169,018.37 : x
  2. Step 2: Convert to fraction form
    304,987.23/420,876.33 = 169,018.37/x
  3. Step 3: Cross multiply
    304,987.23x = 420,876.33 × 169,018.37
  4. Step 4: Simplify right side
    304,987.23x = 71,135,829,163.80
  5. Step 5: Solve for x
    x = 71,135,829,163.80/304,987.23
  6. Step 6: Final answer
    x = 233,241.99

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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.