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Finding the Fourth Proportional to 303,945.20, 426,456.40 and 303,945.20

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Solution

The fourth proportional to 303,945.20, 426,456.40 and 303,945.20 is: 426,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,945.20 : 426,456.40 = 303,945.20 : x
  2. Step 2: Convert to fraction form
    303,945.20/426,456.40 = 303,945.20/x
  3. Step 3: Cross multiply
    303,945.20x = 426,456.40 × 303,945.20
  4. Step 4: Simplify right side
    303,945.20x = 129,619,375,789.28
  5. Step 5: Solve for x
    x = 129,619,375,789.28/303,945.20
  6. Step 6: Final answer
    x = 426,456.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.