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Finding the Fourth Proportional to 403,558.40, 605,078.40 and 166,995.20

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Solution

The fourth proportional to 403,558.40, 605,078.40 and 166,995.20 is: 250,385.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,558.40 : 605,078.40 = 166,995.20 : x
  2. Step 2: Convert to fraction form
    403,558.40/605,078.40 = 166,995.20/x
  3. Step 3: Cross multiply
    403,558.40x = 605,078.40 × 166,995.20
  4. Step 4: Simplify right side
    403,558.40x = 101,045,188,423.68
  5. Step 5: Solve for x
    x = 101,045,188,423.68/403,558.40
  6. Step 6: Final answer
    x = 250,385.54

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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.