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Finding the Fourth Proportional to 287,570.10, 396,800.07 and 166,687.79

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Solution

The fourth proportional to 287,570.10, 396,800.07 and 166,687.79 is: 230,002.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,570.10 : 396,800.07 = 166,687.79 : x
  2. Step 2: Convert to fraction form
    287,570.10/396,800.07 = 166,687.79/x
  3. Step 3: Cross multiply
    287,570.10x = 396,800.07 × 166,687.79
  4. Step 4: Simplify right side
    287,570.10x = 66,141,724,756.15
  5. Step 5: Solve for x
    x = 66,141,724,756.15/287,570.10
  6. Step 6: Final answer
    x = 230,002.09

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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.