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Finding the Fourth Proportional to 200,076.79, 276,114.81 and 115,221.19

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Solution

The fourth proportional to 200,076.79, 276,114.81 and 115,221.19 is: 159,010.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,076.79 : 276,114.81 = 115,221.19 : x
  2. Step 2: Convert to fraction form
    200,076.79/276,114.81 = 115,221.19/x
  3. Step 3: Cross multiply
    200,076.79x = 276,114.81 × 115,221.19
  4. Step 4: Simplify right side
    200,076.79x = 31,814,276,984.82
  5. Step 5: Solve for x
    x = 31,814,276,984.82/200,076.79
  6. Step 6: Final answer
    x = 159,010.33

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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.