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Finding the Fourth Proportional to 393,843.52, 543,496.48 and 214,996.80

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Solution

The fourth proportional to 393,843.52, 543,496.48 and 214,996.80 is: 296,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,843.52 : 543,496.48 = 214,996.80 : x
  2. Step 2: Convert to fraction form
    393,843.52/543,496.48 = 214,996.80/x
  3. Step 3: Cross multiply
    393,843.52x = 543,496.48 × 214,996.80
  4. Step 4: Simplify right side
    393,843.52x = 116,850,004,011.26
  5. Step 5: Solve for x
    x = 116,850,004,011.26/393,843.52
  6. Step 6: Final answer
    x = 296,691.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.