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Finding the Fourth Proportional to 202,991.25, 280,128.52 and 112,353.51

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Solution

The fourth proportional to 202,991.25, 280,128.52 and 112,353.51 is: 155,048.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,991.25 : 280,128.52 = 112,353.51 : x
  2. Step 2: Convert to fraction form
    202,991.25/280,128.52 = 112,353.51/x
  3. Step 3: Cross multiply
    202,991.25x = 280,128.52 × 112,353.51
  4. Step 4: Simplify right side
    202,991.25x = 31,473,420,791.58
  5. Step 5: Solve for x
    x = 31,473,420,791.58/202,991.25
  6. Step 6: Final answer
    x = 155,048.17

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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.