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Finding the Fourth Proportional to 403,372.56, 605,062.30 and 115,183.46

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Solution

The fourth proportional to 403,372.56, 605,062.30 and 115,183.46 is: 172,776.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,372.56 : 605,062.30 = 115,183.46 : x
  2. Step 2: Convert to fraction form
    403,372.56/605,062.30 = 115,183.46/x
  3. Step 3: Cross multiply
    403,372.56x = 605,062.30 × 115,183.46
  4. Step 4: Simplify right side
    403,372.56x = 69,693,166,204.25
  5. Step 5: Solve for x
    x = 69,693,166,204.25/403,372.56
  6. Step 6: Final answer
    x = 172,776.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.