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Finding the Fourth Proportional to 259,587, 389,422.62 and 101,729.88

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Solution

The fourth proportional to 259,587, 389,422.62 and 101,729.88 is: 152,611.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,587 : 389,422.62 = 101,729.88 : x
  2. Step 2: Convert to fraction form
    259,587/389,422.62 = 101,729.88/x
  3. Step 3: Cross multiply
    259,587x = 389,422.62 × 101,729.88
  4. Step 4: Simplify right side
    259,587x = 39,615,916,401.89
  5. Step 5: Solve for x
    x = 39,615,916,401.89/259,587
  6. Step 6: Final answer
    x = 152,611.33

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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.