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Finding the Fourth Proportional to 308,171.66, 425,268.72 and 172,206.73

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Solution

The fourth proportional to 308,171.66, 425,268.72 and 172,206.73 is: 237,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,171.66 : 425,268.72 = 172,206.73 : x
  2. Step 2: Convert to fraction form
    308,171.66/425,268.72 = 172,206.73/x
  3. Step 3: Cross multiply
    308,171.66x = 425,268.72 × 172,206.73
  4. Step 4: Simplify right side
    308,171.66x = 73,234,134,579.31
  5. Step 5: Solve for x
    x = 73,234,134,579.31/308,171.66
  6. Step 6: Final answer
    x = 237,640.72

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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.