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Finding the Fourth Proportional to 200,589.66, 276,844.22 and 128,023.88

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Solution

The fourth proportional to 200,589.66, 276,844.22 and 128,023.88 is: 176,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,589.66 : 276,844.22 = 128,023.88 : x
  2. Step 2: Convert to fraction form
    200,589.66/276,844.22 = 128,023.88/x
  3. Step 3: Cross multiply
    200,589.66x = 276,844.22 × 128,023.88
  4. Step 4: Simplify right side
    200,589.66x = 35,442,671,199.97
  5. Step 5: Solve for x
    x = 35,442,671,199.97/200,589.66
  6. Step 6: Final answer
    x = 176,692.41

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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.