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Finding the Fourth Proportional to 303,736.56, 455,641.32 and 126,363.60

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Solution

The fourth proportional to 303,736.56, 455,641.32 and 126,363.60 is: 189,560.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,736.56 : 455,641.32 = 126,363.60 : x
  2. Step 2: Convert to fraction form
    303,736.56/455,641.32 = 126,363.60/x
  3. Step 3: Cross multiply
    303,736.56x = 455,641.32 × 126,363.60
  4. Step 4: Simplify right side
    303,736.56x = 57,576,477,503.95
  5. Step 5: Solve for x
    x = 57,576,477,503.95/303,736.56
  6. Step 6: Final answer
    x = 189,560.58

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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.