Home / 420,918.42-580,880.18-229,944.12

Finding the Fourth Proportional to 420,918.42, 580,880.18 and 229,944.12

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Solution

The fourth proportional to 420,918.42, 580,880.18 and 229,944.12 is: 317,329.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,918.42 : 580,880.18 = 229,944.12 : x
  2. Step 2: Convert to fraction form
    420,918.42/580,880.18 = 229,944.12/x
  3. Step 3: Cross multiply
    420,918.42x = 580,880.18 × 229,944.12
  4. Step 4: Simplify right side
    420,918.42x = 133,569,981,815.54
  5. Step 5: Solve for x
    x = 133,569,981,815.54/420,918.42
  6. Step 6: Final answer
    x = 317,329.86

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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.