Home / 259,817.12-389,737.02-82,337.22

Finding the Fourth Proportional to 259,817.12, 389,737.02 and 82,337.22

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Solution

The fourth proportional to 259,817.12, 389,737.02 and 82,337.22 is: 123,509.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,817.12 : 389,737.02 = 82,337.22 : x
  2. Step 2: Convert to fraction form
    259,817.12/389,737.02 = 82,337.22/x
  3. Step 3: Cross multiply
    259,817.12x = 389,737.02 × 82,337.22
  4. Step 4: Simplify right side
    259,817.12x = 32,089,862,757.88
  5. Step 5: Solve for x
    x = 32,089,862,757.88/259,817.12
  6. Step 6: Final answer
    x = 123,509.42

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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.