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Finding the Fourth Proportional to 274,464.72, 411,272.04 and 190,388.40

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Solution

The fourth proportional to 274,464.72, 411,272.04 and 190,388.40 is: 285,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,464.72 : 411,272.04 = 190,388.40 : x
  2. Step 2: Convert to fraction form
    274,464.72/411,272.04 = 190,388.40/x
  3. Step 3: Cross multiply
    274,464.72x = 411,272.04 × 190,388.40
  4. Step 4: Simplify right side
    274,464.72x = 78,301,425,660.34
  5. Step 5: Solve for x
    x = 78,301,425,660.34/274,464.72
  6. Step 6: Final answer
    x = 285,287.76

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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.