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Finding the Fourth Proportional to 200,424.56, 276,452.76 and 128,895.04

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Solution

The fourth proportional to 200,424.56, 276,452.76 and 128,895.04 is: 177,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,424.56 : 276,452.76 = 128,895.04 : x
  2. Step 2: Convert to fraction form
    200,424.56/276,452.76 = 128,895.04/x
  3. Step 3: Cross multiply
    200,424.56x = 276,452.76 × 128,895.04
  4. Step 4: Simplify right side
    200,424.56x = 35,633,389,558.31
  5. Step 5: Solve for x
    x = 35,633,389,558.31/200,424.56
  6. Step 6: Final answer
    x = 177,789.54

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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.