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Finding the Fourth Proportional to 281,169.39, 387,997.52 and 153,847.47

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Solution

The fourth proportional to 281,169.39, 387,997.52 and 153,847.47 is: 212,300.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,169.39 : 387,997.52 = 153,847.47 : x
  2. Step 2: Convert to fraction form
    281,169.39/387,997.52 = 153,847.47/x
  3. Step 3: Cross multiply
    281,169.39x = 387,997.52 × 153,847.47
  4. Step 4: Simplify right side
    281,169.39x = 59,692,436,049.04
  5. Step 5: Solve for x
    x = 59,692,436,049.04/281,169.39
  6. Step 6: Final answer
    x = 212,300.62

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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.