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Finding the Fourth Proportional to 281,880.20, 422,820.30 and 84,862.60

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Solution

The fourth proportional to 281,880.20, 422,820.30 and 84,862.60 is: 127,293.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,880.20 : 422,820.30 = 84,862.60 : x
  2. Step 2: Convert to fraction form
    281,880.20/422,820.30 = 84,862.60/x
  3. Step 3: Cross multiply
    281,880.20x = 422,820.30 × 84,862.60
  4. Step 4: Simplify right side
    281,880.20x = 35,881,629,990.78
  5. Step 5: Solve for x
    x = 35,881,629,990.78/281,880.20
  6. Step 6: Final answer
    x = 127,293.90

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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.