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Finding the Fourth Proportional to 303,515.80, 455,273.70 and 126,004.30

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Solution

The fourth proportional to 303,515.80, 455,273.70 and 126,004.30 is: 189,006.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,515.80 : 455,273.70 = 126,004.30 : x
  2. Step 2: Convert to fraction form
    303,515.80/455,273.70 = 126,004.30/x
  3. Step 3: Cross multiply
    303,515.80x = 455,273.70 × 126,004.30
  4. Step 4: Simplify right side
    303,515.80x = 57,366,443,876.91
  5. Step 5: Solve for x
    x = 57,366,443,876.91/303,515.80
  6. Step 6: Final answer
    x = 189,006.45

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1.5x scale

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.