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Finding the Fourth Proportional to 287,174.39, 396,313.83 and 159,858.18

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Solution

The fourth proportional to 287,174.39, 396,313.83 and 159,858.18 is: 220,611.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,174.39 : 396,313.83 = 159,858.18 : x
  2. Step 2: Convert to fraction form
    287,174.39/396,313.83 = 159,858.18/x
  3. Step 3: Cross multiply
    287,174.39x = 396,313.83 × 159,858.18
  4. Step 4: Simplify right side
    287,174.39x = 63,354,007,572.63
  5. Step 5: Solve for x
    x = 63,354,007,572.63/287,174.39
  6. Step 6: Final answer
    x = 220,611.62

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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.