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Finding the Fourth Proportional to 259,817.37, 389,737.01 and 82,320.45

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Solution

The fourth proportional to 259,817.37, 389,737.01 and 82,320.45 is: 123,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,817.37 : 389,737.01 = 82,320.45 : x
  2. Step 2: Convert to fraction form
    259,817.37/389,737.01 = 82,320.45/x
  3. Step 3: Cross multiply
    259,817.37x = 389,737.01 × 82,320.45
  4. Step 4: Simplify right side
    259,817.37x = 32,083,326,044.85
  5. Step 5: Solve for x
    x = 32,083,326,044.85/259,817.37
  6. Step 6: Final answer
    x = 123,484.15

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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.