Home / 200,408.76-276,431.02-128,879.28

Finding the Fourth Proportional to 200,408.76, 276,431.02 and 128,879.28

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Solution

The fourth proportional to 200,408.76, 276,431.02 and 128,879.28 is: 177,767.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,408.76 : 276,431.02 = 128,879.28 : x
  2. Step 2: Convert to fraction form
    200,408.76/276,431.02 = 128,879.28/x
  3. Step 3: Cross multiply
    200,408.76x = 276,431.02 × 128,879.28
  4. Step 4: Simplify right side
    200,408.76x = 35,626,230,827.27
  5. Step 5: Solve for x
    x = 35,626,230,827.27/200,408.76
  6. Step 6: Final answer
    x = 177,767.83

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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.