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Finding the Fourth Proportional to 681,217.72, 940,072.30 and 375,288.01

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Solution

The fourth proportional to 681,217.72, 940,072.30 and 375,288.01 is: 517,892.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,217.72 : 940,072.30 = 375,288.01 : x
  2. Step 2: Convert to fraction form
    681,217.72/940,072.30 = 375,288.01/x
  3. Step 3: Cross multiply
    681,217.72x = 940,072.30 × 375,288.01
  4. Step 4: Simplify right side
    681,217.72x = 352,797,862,723.12
  5. Step 5: Solve for x
    x = 352,797,862,723.12/681,217.72
  6. Step 6: Final answer
    x = 517,892.96

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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.