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Finding the Fourth Proportional to 442,979.80, 664,469.70 and 303,011.80

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Solution

The fourth proportional to 442,979.80, 664,469.70 and 303,011.80 is: 454,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,979.80 : 664,469.70 = 303,011.80 : x
  2. Step 2: Convert to fraction form
    442,979.80/664,469.70 = 303,011.80/x
  3. Step 3: Cross multiply
    442,979.80x = 664,469.70 × 303,011.80
  4. Step 4: Simplify right side
    442,979.80x = 201,342,159,842.46
  5. Step 5: Solve for x
    x = 201,342,159,842.46/442,979.80
  6. Step 6: Final answer
    x = 454,517.70

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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.