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Finding the Fourth Proportional to 200,580.85, 276,765.28 and 128,944.45

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Solution

The fourth proportional to 200,580.85, 276,765.28 and 128,944.45 is: 177,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,580.85 : 276,765.28 = 128,944.45 : x
  2. Step 2: Convert to fraction form
    200,580.85/276,765.28 = 128,944.45/x
  3. Step 3: Cross multiply
    200,580.85x = 276,765.28 × 128,944.45
  4. Step 4: Simplify right side
    200,580.85x = 35,687,346,808.70
  5. Step 5: Solve for x
    x = 35,687,346,808.70/200,580.85
  6. Step 6: Final answer
    x = 177,920.01

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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.