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Finding the Fourth Proportional to 259,577.70, 389,496.15 and 147,344.10

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Solution

The fourth proportional to 259,577.70, 389,496.15 and 147,344.10 is: 221,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,577.70 : 389,496.15 = 147,344.10 : x
  2. Step 2: Convert to fraction form
    259,577.70/389,496.15 = 147,344.10/x
  3. Step 3: Cross multiply
    259,577.70x = 389,496.15 × 147,344.10
  4. Step 4: Simplify right side
    259,577.70x = 57,389,959,675.22
  5. Step 5: Solve for x
    x = 57,389,959,675.22/259,577.70
  6. Step 6: Final answer
    x = 221,089.71

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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.