Home / 259,764.84-389,643-82,271.52

Finding the Fourth Proportional to 259,764.84, 389,643 and 82,271.52

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Solution

The fourth proportional to 259,764.84, 389,643 and 82,271.52 is: 123,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,764.84 : 389,643 = 82,271.52 : x
  2. Step 2: Convert to fraction form
    259,764.84/389,643 = 82,271.52/x
  3. Step 3: Cross multiply
    259,764.84x = 389,643 × 82,271.52
  4. Step 4: Simplify right side
    259,764.84x = 32,056,521,867.36
  5. Step 5: Solve for x
    x = 32,056,521,867.36/259,764.84
  6. Step 6: Final answer
    x = 123,405.93

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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.