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Finding the Fourth Proportional to 378,660.80, 567,007.05 and 299,272.70

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Solution

The fourth proportional to 378,660.80, 567,007.05 and 299,272.70 is: 448,131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,660.80 : 567,007.05 = 299,272.70 : x
  2. Step 2: Convert to fraction form
    378,660.80/567,007.05 = 299,272.70/x
  3. Step 3: Cross multiply
    378,660.80x = 567,007.05 × 299,272.70
  4. Step 4: Simplify right side
    378,660.80x = 169,689,730,772.54
  5. Step 5: Solve for x
    x = 169,689,730,772.54/378,660.80
  6. Step 6: Final answer
    x = 448,131.23

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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.