Home / 420,917.28-580,844.19-229,893.76

Finding the Fourth Proportional to 420,917.28, 580,844.19 and 229,893.76

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Solution

The fourth proportional to 420,917.28, 580,844.19 and 229,893.76 is: 317,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,917.28 : 580,844.19 = 229,893.76 : x
  2. Step 2: Convert to fraction form
    420,917.28/580,844.19 = 229,893.76/x
  3. Step 3: Cross multiply
    420,917.28x = 580,844.19 × 229,893.76
  4. Step 4: Simplify right side
    420,917.28x = 133,532,454,813.25
  5. Step 5: Solve for x
    x = 133,532,454,813.25/420,917.28
  6. Step 6: Final answer
    x = 317,241.56

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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.