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Finding the Fourth Proportional to 281,997.80, 389,171.24 and 154,685.24

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Solution

The fourth proportional to 281,997.80, 389,171.24 and 154,685.24 is: 213,473.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,997.80 : 389,171.24 = 154,685.24 : x
  2. Step 2: Convert to fraction form
    281,997.80/389,171.24 = 154,685.24/x
  3. Step 3: Cross multiply
    281,997.80x = 389,171.24 × 154,685.24
  4. Step 4: Simplify right side
    281,997.80x = 60,199,046,660.50
  5. Step 5: Solve for x
    x = 60,199,046,660.50/281,997.80
  6. Step 6: Final answer
    x = 213,473.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.