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Finding the Fourth Proportional to 211,734, 317,601 and 63,990

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Solution

The fourth proportional to 211,734, 317,601 and 63,990 is: 95,985

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,734 : 317,601 = 63,990 : x
  2. Step 2: Convert to fraction form
    211,734/317,601 = 63,990/x
  3. Step 3: Cross multiply
    211,734x = 317,601 × 63,990
  4. Step 4: Simplify right side
    211,734x = 20,323,287,990
  5. Step 5: Solve for x
    x = 20,323,287,990/211,734
  6. Step 6: Final answer
    x = 95,985

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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.