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Finding the Fourth Proportional to 281,321.60, 388,158.56 and 166,542.56

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Solution

The fourth proportional to 281,321.60, 388,158.56 and 166,542.56 is: 229,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,321.60 : 388,158.56 = 166,542.56 : x
  2. Step 2: Convert to fraction form
    281,321.60/388,158.56 = 166,542.56/x
  3. Step 3: Cross multiply
    281,321.60x = 388,158.56 × 166,542.56
  4. Step 4: Simplify right side
    281,321.60x = 64,644,920,268.31
  5. Step 5: Solve for x
    x = 64,644,920,268.31/281,321.60
  6. Step 6: Final answer
    x = 229,790.11

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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.