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Finding the Fourth Proportional to 287,637.57, 396,524.81 and 201,329.43

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Solution

The fourth proportional to 287,637.57, 396,524.81 and 201,329.43 is: 277,544.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,637.57 : 396,524.81 = 201,329.43 : x
  2. Step 2: Convert to fraction form
    287,637.57/396,524.81 = 201,329.43/x
  3. Step 3: Cross multiply
    287,637.57x = 396,524.81 × 201,329.43
  4. Step 4: Simplify right side
    287,637.57x = 79,832,112,971.51
  5. Step 5: Solve for x
    x = 79,832,112,971.51/287,637.57
  6. Step 6: Final answer
    x = 277,544.11

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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.