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Finding the Fourth Proportional to 287,398.90, 396,610.58 and 166,610.21

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Solution

The fourth proportional to 287,398.90, 396,610.58 and 166,610.21 is: 229,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,398.90 : 396,610.58 = 166,610.21 : x
  2. Step 2: Convert to fraction form
    287,398.90/396,610.58 = 166,610.21/x
  3. Step 3: Cross multiply
    287,398.90x = 396,610.58 × 166,610.21
  4. Step 4: Simplify right side
    287,398.90x = 66,079,370,455.49
  5. Step 5: Solve for x
    x = 66,079,370,455.49/287,398.90
  6. Step 6: Final answer
    x = 229,922.14

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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.