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Finding the Fourth Proportional to 324,770,653.80, 487,155,980.70 and 255,895,900.20

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Solution

The fourth proportional to 324,770,653.80, 487,155,980.70 and 255,895,900.20 is: 383,843,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,770,653.80 : 487,155,980.70 = 255,895,900.20 : x
  2. Step 2: Convert to fraction form
    324,770,653.80/487,155,980.70 = 255,895,900.20/x
  3. Step 3: Cross multiply
    324,770,653.80x = 487,155,980.70 × 255,895,900.20
  4. Step 4: Simplify right side
    324,770,653.80x = 124,661,218,219,040,320
  5. Step 5: Solve for x
    x = 124,661,218,219,040,320/324,770,653.80
  6. Step 6: Final answer
    x = 383,843,850.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.