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Finding the Fourth Proportional to 816,809.60, 1,225,348.80 and 255,708.80

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Solution

The fourth proportional to 816,809.60, 1,225,348.80 and 255,708.80 is: 383,605.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,809.60 : 1,225,348.80 = 255,708.80 : x
  2. Step 2: Convert to fraction form
    816,809.60/1,225,348.80 = 255,708.80/x
  3. Step 3: Cross multiply
    816,809.60x = 1,225,348.80 × 255,708.80
  4. Step 4: Simplify right side
    816,809.60x = 313,332,471,229.44
  5. Step 5: Solve for x
    x = 313,332,471,229.44/816,809.60
  6. Step 6: Final answer
    x = 383,605.27

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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.