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Finding the Fourth Proportional to 303,616.60, 455,060.40 and 126,032.20

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Solution

The fourth proportional to 303,616.60, 455,060.40 and 126,032.20 is: 188,896.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,616.60 : 455,060.40 = 126,032.20 : x
  2. Step 2: Convert to fraction form
    303,616.60/455,060.40 = 126,032.20/x
  3. Step 3: Cross multiply
    303,616.60x = 455,060.40 × 126,032.20
  4. Step 4: Simplify right side
    303,616.60x = 57,352,263,344.88
  5. Step 5: Solve for x
    x = 57,352,263,344.88/303,616.60
  6. Step 6: Final answer
    x = 188,896.99

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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.