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Finding the Fourth Proportional to 281,309.31, 421,540.88 and 112,662.45

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Solution

The fourth proportional to 281,309.31, 421,540.88 and 112,662.45 is: 168,824.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,309.31 : 421,540.88 = 112,662.45 : x
  2. Step 2: Convert to fraction form
    281,309.31/421,540.88 = 112,662.45/x
  3. Step 3: Cross multiply
    281,309.31x = 421,540.88 × 112,662.45
  4. Step 4: Simplify right side
    281,309.31x = 47,491,827,752.64
  5. Step 5: Solve for x
    x = 47,491,827,752.64/281,309.31
  6. Step 6: Final answer
    x = 168,824.23

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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.