Home / 492,921.56-680,226.54-278,131.52

Finding the Fourth Proportional to 492,921.56, 680,226.54 and 278,131.52

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Solution

The fourth proportional to 492,921.56, 680,226.54 and 278,131.52 is: 383,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,921.56 : 680,226.54 = 278,131.52 : x
  2. Step 2: Convert to fraction form
    492,921.56/680,226.54 = 278,131.52/x
  3. Step 3: Cross multiply
    492,921.56x = 680,226.54 × 278,131.52
  4. Step 4: Simplify right side
    492,921.56x = 189,192,441,514.54
  5. Step 5: Solve for x
    x = 189,192,441,514.54/492,921.56
  6. Step 6: Final answer
    x = 383,818.56

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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.