Home / 259,633.47-389,464.38-82,127.28

Finding the Fourth Proportional to 259,633.47, 389,464.38 and 82,127.28

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Solution

The fourth proportional to 259,633.47, 389,464.38 and 82,127.28 is: 123,195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,633.47 : 389,464.38 = 82,127.28 : x
  2. Step 2: Convert to fraction form
    259,633.47/389,464.38 = 82,127.28/x
  3. Step 3: Cross multiply
    259,633.47x = 389,464.38 × 82,127.28
  4. Step 4: Simplify right side
    259,633.47x = 31,985,650,186.29
  5. Step 5: Solve for x
    x = 31,985,650,186.29/259,633.47
  6. Step 6: Final answer
    x = 123,195.40

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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.