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Finding the Fourth Proportional to 211,617.35, 317,419.87 and 61,861.16

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Solution

The fourth proportional to 211,617.35, 317,419.87 and 61,861.16 is: 92,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,617.35 : 317,419.87 = 61,861.16 : x
  2. Step 2: Convert to fraction form
    211,617.35/317,419.87 = 61,861.16/x
  3. Step 3: Cross multiply
    211,617.35x = 317,419.87 × 61,861.16
  4. Step 4: Simplify right side
    211,617.35x = 19,635,961,519.90
  5. Step 5: Solve for x
    x = 19,635,961,519.90/211,617.35
  6. Step 6: Final answer
    x = 92,789.94

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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.