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Finding the Fourth Proportional to 287,409.23, 396,624.83 and 166,620.54

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Solution

The fourth proportional to 287,409.23, 396,624.83 and 166,620.54 is: 229,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,409.23 : 396,624.83 = 166,620.54 : x
  2. Step 2: Convert to fraction form
    287,409.23/396,624.83 = 166,620.54/x
  3. Step 3: Cross multiply
    287,409.23x = 396,624.83 × 166,620.54
  4. Step 4: Simplify right side
    287,409.23x = 66,085,842,518.91
  5. Step 5: Solve for x
    x = 66,085,842,518.91/287,409.23
  6. Step 6: Final answer
    x = 229,936.40

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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.