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Finding the Fourth Proportional to 307,992.57, 425,025.27 and 172,028.49

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Solution

The fourth proportional to 307,992.57, 425,025.27 and 172,028.49 is: 237,396.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,992.57 : 425,025.27 = 172,028.49 : x
  2. Step 2: Convert to fraction form
    307,992.57/425,025.27 = 172,028.49/x
  3. Step 3: Cross multiply
    307,992.57x = 425,025.27 × 172,028.49
  4. Step 4: Simplify right side
    307,992.57x = 73,116,455,409.94
  5. Step 5: Solve for x
    x = 73,116,455,409.94/307,992.57
  6. Step 6: Final answer
    x = 237,396.82

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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.