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Finding the Fourth Proportional to 282,118.80, 389,323.90 and 161,262.69

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Solution

The fourth proportional to 282,118.80, 389,323.90 and 161,262.69 is: 222,542.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,118.80 : 389,323.90 = 161,262.69 : x
  2. Step 2: Convert to fraction form
    282,118.80/389,323.90 = 161,262.69/x
  3. Step 3: Cross multiply
    282,118.80x = 389,323.90 × 161,262.69
  4. Step 4: Simplify right side
    282,118.80x = 62,783,419,395.29
  5. Step 5: Solve for x
    x = 62,783,419,395.29/282,118.80
  6. Step 6: Final answer
    x = 222,542.49

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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.