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Finding the Fourth Proportional to 303,729.60, 455,594.40 and 126,177.60

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Solution

The fourth proportional to 303,729.60, 455,594.40 and 126,177.60 is: 189,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,729.60 : 455,594.40 = 126,177.60 : x
  2. Step 2: Convert to fraction form
    303,729.60/455,594.40 = 126,177.60/x
  3. Step 3: Cross multiply
    303,729.60x = 455,594.40 × 126,177.60
  4. Step 4: Simplify right side
    303,729.60x = 57,485,807,965.44
  5. Step 5: Solve for x
    x = 57,485,807,965.44/303,729.60
  6. Step 6: Final answer
    x = 189,266.40

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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.