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Finding the Fourth Proportional to 308,129.96, 425,216.40 and 172,187.33

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Solution

The fourth proportional to 308,129.96, 425,216.40 and 172,187.33 is: 237,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,129.96 : 425,216.40 = 172,187.33 : x
  2. Step 2: Convert to fraction form
    308,129.96/425,216.40 = 172,187.33/x
  3. Step 3: Cross multiply
    308,129.96x = 425,216.40 × 172,187.33
  4. Step 4: Simplify right side
    308,129.96x = 73,216,876,588.21
  5. Step 5: Solve for x
    x = 73,216,876,588.21/308,129.96
  6. Step 6: Final answer
    x = 237,616.87

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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.