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Finding the Fourth Proportional to 281,552.37, 422,369.70 and 81,846.78

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Solution

The fourth proportional to 281,552.37, 422,369.70 and 81,846.78 is: 122,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,552.37 : 422,369.70 = 81,846.78 : x
  2. Step 2: Convert to fraction form
    281,552.37/422,369.70 = 81,846.78/x
  3. Step 3: Cross multiply
    281,552.37x = 422,369.70 × 81,846.78
  4. Step 4: Simplify right side
    281,552.37x = 34,569,599,914.57
  5. Step 5: Solve for x
    x = 34,569,599,914.57/281,552.37
  6. Step 6: Final answer
    x = 122,782.13

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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.