Home / 259,764.30-389,643.75-82,271.30

Finding the Fourth Proportional to 259,764.30, 389,643.75 and 82,271.30

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Solution

The fourth proportional to 259,764.30, 389,643.75 and 82,271.30 is: 123,406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,764.30 : 389,643.75 = 82,271.30 : x
  2. Step 2: Convert to fraction form
    259,764.30/389,643.75 = 82,271.30/x
  3. Step 3: Cross multiply
    259,764.30x = 389,643.75 × 82,271.30
  4. Step 4: Simplify right side
    259,764.30x = 32,056,495,901.16
  5. Step 5: Solve for x
    x = 32,056,495,901.16/259,764.30
  6. Step 6: Final answer
    x = 123,406.09

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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.