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Finding the Fourth Proportional to 211,536.78, 317,334.87 and 61,788.03

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Solution

The fourth proportional to 211,536.78, 317,334.87 and 61,788.03 is: 92,690.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,536.78 : 317,334.87 = 61,788.03 : x
  2. Step 2: Convert to fraction form
    211,536.78/317,334.87 = 61,788.03/x
  3. Step 3: Cross multiply
    211,536.78x = 317,334.87 × 61,788.03
  4. Step 4: Simplify right side
    211,536.78x = 19,607,496,467.61
  5. Step 5: Solve for x
    x = 19,607,496,467.61/211,536.78
  6. Step 6: Final answer
    x = 92,690.72

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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.