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Finding the Fourth Proportional to 211,515, 317,241.27 and 61,715.09

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Solution

The fourth proportional to 211,515, 317,241.27 and 61,715.09 is: 92,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,515 : 317,241.27 = 61,715.09 : x
  2. Step 2: Convert to fraction form
    211,515/317,241.27 = 61,715.09/x
  3. Step 3: Cross multiply
    211,515x = 317,241.27 × 61,715.09
  4. Step 4: Simplify right side
    211,515x = 19,578,571,943.56
  5. Step 5: Solve for x
    x = 19,578,571,943.56/211,515
  6. Step 6: Final answer
    x = 92,563.52

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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.