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Finding the Fourth Proportional to 259,396.72, 389,270.10 and 101,605.48

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Solution

The fourth proportional to 259,396.72, 389,270.10 and 101,605.48 is: 152,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,396.72 : 389,270.10 = 101,605.48 : x
  2. Step 2: Convert to fraction form
    259,396.72/389,270.10 = 101,605.48/x
  3. Step 3: Cross multiply
    259,396.72x = 389,270.10 × 101,605.48
  4. Step 4: Simplify right side
    259,396.72x = 39,551,975,360.15
  5. Step 5: Solve for x
    x = 39,551,975,360.15/259,396.72
  6. Step 6: Final answer
    x = 152,476.78

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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.