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Finding the Fourth Proportional to 281,711, 422,477.28 and 92,127.56

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Solution

The fourth proportional to 281,711, 422,477.28 and 92,127.56 is: 138,162.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,711 : 422,477.28 = 92,127.56 : x
  2. Step 2: Convert to fraction form
    281,711/422,477.28 = 92,127.56/x
  3. Step 3: Cross multiply
    281,711x = 422,477.28 × 92,127.56
  4. Step 4: Simplify right side
    281,711x = 38,921,800,961.84
  5. Step 5: Solve for x
    x = 38,921,800,961.84/281,711
  6. Step 6: Final answer
    x = 138,162.16

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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.