Home / 287,570.11-396,800.07-166,687.78

Finding the Fourth Proportional to 287,570.11, 396,800.07 and 166,687.78

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Solution

The fourth proportional to 287,570.11, 396,800.07 and 166,687.78 is: 230,002.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,570.11 : 396,800.07 = 166,687.78 : x
  2. Step 2: Convert to fraction form
    287,570.11/396,800.07 = 166,687.78/x
  3. Step 3: Cross multiply
    287,570.11x = 396,800.07 × 166,687.78
  4. Step 4: Simplify right side
    287,570.11x = 66,141,722,772.14
  5. Step 5: Solve for x
    x = 66,141,722,772.14/287,570.11
  6. Step 6: Final answer
    x = 230,002.08

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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.