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Finding the Fourth Proportional to 403,043.60, 604,392.60 and 203,286.80

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Solution

The fourth proportional to 403,043.60, 604,392.60 and 203,286.80 is: 304,843.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,043.60 : 604,392.60 = 203,286.80 : x
  2. Step 2: Convert to fraction form
    403,043.60/604,392.60 = 203,286.80/x
  3. Step 3: Cross multiply
    403,043.60x = 604,392.60 × 203,286.80
  4. Step 4: Simplify right side
    403,043.60x = 122,865,037,597.68
  5. Step 5: Solve for x
    x = 122,865,037,597.68/403,043.60
  6. Step 6: Final answer
    x = 304,843.04

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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.