Home / 260,212.31-390,234.86-82,677.83

Finding the Fourth Proportional to 260,212.31, 390,234.86 and 82,677.83

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Solution

The fourth proportional to 260,212.31, 390,234.86 and 82,677.83 is: 123,990.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,212.31 : 390,234.86 = 82,677.83 : x
  2. Step 2: Convert to fraction form
    260,212.31/390,234.86 = 82,677.83/x
  3. Step 3: Cross multiply
    260,212.31x = 390,234.86 × 82,677.83
  4. Step 4: Simplify right side
    260,212.31x = 32,263,771,415.15
  5. Step 5: Solve for x
    x = 32,263,771,415.15/260,212.31
  6. Step 6: Final answer
    x = 123,990.18

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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.