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Finding the Fourth Proportional to 308,179.08, 425,286.25 and 172,213.16

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Solution

The fourth proportional to 308,179.08, 425,286.25 and 172,213.16 is: 237,653.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,179.08 : 425,286.25 = 172,213.16 : x
  2. Step 2: Convert to fraction form
    308,179.08/425,286.25 = 172,213.16/x
  3. Step 3: Cross multiply
    308,179.08x = 425,286.25 × 172,213.16
  4. Step 4: Simplify right side
    308,179.08x = 73,239,886,460.09
  5. Step 5: Solve for x
    x = 73,239,886,460.09/308,179.08
  6. Step 6: Final answer
    x = 237,653.66

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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.