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Finding the Fourth Proportional to 287,369.33, 396,569.43 and 166,580.57

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Solution

The fourth proportional to 287,369.33, 396,569.43 and 166,580.57 is: 229,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,369.33 : 396,569.43 = 166,580.57 : x
  2. Step 2: Convert to fraction form
    287,369.33/396,569.43 = 166,580.57/x
  3. Step 3: Cross multiply
    287,369.33x = 396,569.43 × 166,580.57
  4. Step 4: Simplify right side
    287,369.33x = 66,060,759,711.13
  5. Step 5: Solve for x
    x = 66,060,759,711.13/287,369.33
  6. Step 6: Final answer
    x = 229,881.04

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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.