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Finding the Fourth Proportional to 262,797.15, 394,221.53 and 70,669.20

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Solution

The fourth proportional to 262,797.15, 394,221.53 and 70,669.20 is: 106,010.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,797.15 : 394,221.53 = 70,669.20 : x
  2. Step 2: Convert to fraction form
    262,797.15/394,221.53 = 70,669.20/x
  3. Step 3: Cross multiply
    262,797.15x = 394,221.53 × 70,669.20
  4. Step 4: Simplify right side
    262,797.15x = 27,859,320,147.88
  5. Step 5: Solve for x
    x = 27,859,320,147.88/262,797.15
  6. Step 6: Final answer
    x = 106,010.74

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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.