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Finding the Fourth Proportional to 308,857.80, 463,286.70 and 218,656.20

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Solution

The fourth proportional to 308,857.80, 463,286.70 and 218,656.20 is: 327,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,857.80 : 463,286.70 = 218,656.20 : x
  2. Step 2: Convert to fraction form
    308,857.80/463,286.70 = 218,656.20/x
  3. Step 3: Cross multiply
    308,857.80x = 463,286.70 × 218,656.20
  4. Step 4: Simplify right side
    308,857.80x = 101,300,509,332.54
  5. Step 5: Solve for x
    x = 101,300,509,332.54/308,857.80
  6. Step 6: Final answer
    x = 327,984.30

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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.