Home / 259,290.24-388,935.36-81,815.22

Finding the Fourth Proportional to 259,290.24, 388,935.36 and 81,815.22

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Solution

The fourth proportional to 259,290.24, 388,935.36 and 81,815.22 is: 122,722.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,290.24 : 388,935.36 = 81,815.22 : x
  2. Step 2: Convert to fraction form
    259,290.24/388,935.36 = 81,815.22/x
  3. Step 3: Cross multiply
    259,290.24x = 388,935.36 × 81,815.22
  4. Step 4: Simplify right side
    259,290.24x = 31,820,832,044.18
  5. Step 5: Solve for x
    x = 31,820,832,044.18/259,290.24
  6. Step 6: Final answer
    x = 122,722.83

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1.5x scale

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.