Home / 281,965.77-389,111.99-161,144.55

Finding the Fourth Proportional to 281,965.77, 389,111.99 and 161,144.55

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Solution

The fourth proportional to 281,965.77, 389,111.99 and 161,144.55 is: 222,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,965.77 : 389,111.99 = 161,144.55 : x
  2. Step 2: Convert to fraction form
    281,965.77/389,111.99 = 161,144.55/x
  3. Step 3: Cross multiply
    281,965.77x = 389,111.99 × 161,144.55
  4. Step 4: Simplify right side
    281,965.77x = 62,703,275,722.43
  5. Step 5: Solve for x
    x = 62,703,275,722.43/281,965.77
  6. Step 6: Final answer
    x = 222,379.03

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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.