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Finding the Fourth Proportional to 262,881.06, 394,284.53 and 85,390.22

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Solution

The fourth proportional to 262,881.06, 394,284.53 and 85,390.22 is: 128,073.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,881.06 : 394,284.53 = 85,390.22 : x
  2. Step 2: Convert to fraction form
    262,881.06/394,284.53 = 85,390.22/x
  3. Step 3: Cross multiply
    262,881.06x = 394,284.53 × 85,390.22
  4. Step 4: Simplify right side
    262,881.06x = 33,668,040,360.92
  5. Step 5: Solve for x
    x = 33,668,040,360.92/262,881.06
  6. Step 6: Final answer
    x = 128,073.28

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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.