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Finding the Fourth Proportional to 303,606.80, 455,411.77 and 126,114.00

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Solution

The fourth proportional to 303,606.80, 455,411.77 and 126,114.00 is: 189,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,606.80 : 455,411.77 = 126,114.00 : x
  2. Step 2: Convert to fraction form
    303,606.80/455,411.77 = 126,114.00/x
  3. Step 3: Cross multiply
    303,606.80x = 455,411.77 × 126,114.00
  4. Step 4: Simplify right side
    303,606.80x = 57,433,797,938.70
  5. Step 5: Solve for x
    x = 57,433,797,938.70/303,606.80
  6. Step 6: Final answer
    x = 189,171.65

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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.