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Finding the Fourth Proportional to 351,589.43, 485,158.65 and 196,511.69

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Solution

The fourth proportional to 351,589.43, 485,158.65 and 196,511.69 is: 271,166.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,589.43 : 485,158.65 = 196,511.69 : x
  2. Step 2: Convert to fraction form
    351,589.43/485,158.65 = 196,511.69/x
  3. Step 3: Cross multiply
    351,589.43x = 485,158.65 × 196,511.69
  4. Step 4: Simplify right side
    351,589.43x = 95,339,343,803.83
  5. Step 5: Solve for x
    x = 95,339,343,803.83/351,589.43
  6. Step 6: Final answer
    x = 271,166.70

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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.