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Finding the Fourth Proportional to 211,415.87, 317,170.45 and 61,667.87

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Solution

The fourth proportional to 211,415.87, 317,170.45 and 61,667.87 is: 92,515.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,415.87 : 317,170.45 = 61,667.87 : x
  2. Step 2: Convert to fraction form
    211,415.87/317,170.45 = 61,667.87/x
  3. Step 3: Cross multiply
    211,415.87x = 317,170.45 × 61,667.87
  4. Step 4: Simplify right side
    211,415.87x = 19,559,226,717.20
  5. Step 5: Solve for x
    x = 19,559,226,717.20/211,415.87
  6. Step 6: Final answer
    x = 92,515.42

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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.