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Finding the Fourth Proportional to 308,872.69, 427,057.64 and 270,522.28

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Solution

The fourth proportional to 308,872.69, 427,057.64 and 270,522.28 is: 374,033.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,872.69 : 427,057.64 = 270,522.28 : x
  2. Step 2: Convert to fraction form
    308,872.69/427,057.64 = 270,522.28/x
  3. Step 3: Cross multiply
    308,872.69x = 427,057.64 × 270,522.28
  4. Step 4: Simplify right side
    308,872.69x = 115,528,606,464.22
  5. Step 5: Solve for x
    x = 115,528,606,464.22/308,872.69
  6. Step 6: Final answer
    x = 374,033.09

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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.