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Finding the Fourth Proportional to 351,614.66, 485,230.56 and 190,469.72

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Solution

The fourth proportional to 351,614.66, 485,230.56 and 190,469.72 is: 262,849.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,614.66 : 485,230.56 = 190,469.72 : x
  2. Step 2: Convert to fraction form
    351,614.66/485,230.56 = 190,469.72/x
  3. Step 3: Cross multiply
    351,614.66x = 485,230.56 × 190,469.72
  4. Step 4: Simplify right side
    351,614.66x = 92,421,726,472.49
  5. Step 5: Solve for x
    x = 92,421,726,472.49/351,614.66
  6. Step 6: Final answer
    x = 262,849.47

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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.