Home / 259,079.22-388,632.77-81,600.12

Finding the Fourth Proportional to 259,079.22, 388,632.77 and 81,600.12

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Solution

The fourth proportional to 259,079.22, 388,632.77 and 81,600.12 is: 122,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,079.22 : 388,632.77 = 81,600.12 : x
  2. Step 2: Convert to fraction form
    259,079.22/388,632.77 = 81,600.12/x
  3. Step 3: Cross multiply
    259,079.22x = 388,632.77 × 81,600.12
  4. Step 4: Simplify right side
    259,079.22x = 31,712,480,259.93
  5. Step 5: Solve for x
    x = 31,712,480,259.93/259,079.22
  6. Step 6: Final answer
    x = 122,404.57

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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.