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Finding the Fourth Proportional to 297,840.81, 411,023.48 and 161,874.75

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Solution

The fourth proportional to 297,840.81, 411,023.48 and 161,874.75 is: 223,388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,840.81 : 411,023.48 = 161,874.75 : x
  2. Step 2: Convert to fraction form
    297,840.81/411,023.48 = 161,874.75/x
  3. Step 3: Cross multiply
    297,840.81x = 411,023.48 × 161,874.75
  4. Step 4: Simplify right side
    297,840.81x = 66,534,322,259.76
  5. Step 5: Solve for x
    x = 66,534,322,259.76/297,840.81
  6. Step 6: Final answer
    x = 223,388.87

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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.