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Finding the Fourth Proportional to 281,960.36, 422,980.75 and 92,380.20

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Solution

The fourth proportional to 281,960.36, 422,980.75 and 92,380.20 is: 138,583.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,960.36 : 422,980.75 = 92,380.20 : x
  2. Step 2: Convert to fraction form
    281,960.36/422,980.75 = 92,380.20/x
  3. Step 3: Cross multiply
    281,960.36x = 422,980.75 × 92,380.20
  4. Step 4: Simplify right side
    281,960.36x = 39,075,046,281.15
  5. Step 5: Solve for x
    x = 39,075,046,281.15/281,960.36
  6. Step 6: Final answer
    x = 138,583.47

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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.