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Finding the Fourth Proportional to 307,179.74, 423,856.62 and 171,183.84

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Solution

The fourth proportional to 307,179.74, 423,856.62 and 171,183.84 is: 236,205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,179.74 : 423,856.62 = 171,183.84 : x
  2. Step 2: Convert to fraction form
    307,179.74/423,856.62 = 171,183.84/x
  3. Step 3: Cross multiply
    307,179.74x = 423,856.62 × 171,183.84
  4. Step 4: Simplify right side
    307,179.74x = 72,557,403,821.02
  5. Step 5: Solve for x
    x = 72,557,403,821.02/307,179.74
  6. Step 6: Final answer
    x = 236,205.05

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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.