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Finding the Fourth Proportional to 259,741.80, 389,612.70 and 259,741.80

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Solution

The fourth proportional to 259,741.80, 389,612.70 and 259,741.80 is: 389,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,741.80 : 389,612.70 = 259,741.80 : x
  2. Step 2: Convert to fraction form
    259,741.80/389,612.70 = 259,741.80/x
  3. Step 3: Cross multiply
    259,741.80x = 389,612.70 × 259,741.80
  4. Step 4: Simplify right side
    259,741.80x = 101,198,704,000.86
  5. Step 5: Solve for x
    x = 101,198,704,000.86/259,741.80
  6. Step 6: Final answer
    x = 389,612.70

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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.