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Finding the Fourth Proportional to 262,992.80, 394,489.20 and 115,536.80

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Solution

The fourth proportional to 262,992.80, 394,489.20 and 115,536.80 is: 173,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,992.80 : 394,489.20 = 115,536.80 : x
  2. Step 2: Convert to fraction form
    262,992.80/394,489.20 = 115,536.80/x
  3. Step 3: Cross multiply
    262,992.80x = 394,489.20 × 115,536.80
  4. Step 4: Simplify right side
    262,992.80x = 45,578,019,802.56
  5. Step 5: Solve for x
    x = 45,578,019,802.56/262,992.80
  6. Step 6: Final answer
    x = 173,305.20

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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.