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Finding the Fourth Proportional to 317,766.21, 476,665.71 and 81,110.94

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Solution

The fourth proportional to 317,766.21, 476,665.71 and 81,110.94 is: 121,670.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,766.21 : 476,665.71 = 81,110.94 : x
  2. Step 2: Convert to fraction form
    317,766.21/476,665.71 = 81,110.94/x
  3. Step 3: Cross multiply
    317,766.21x = 476,665.71 × 81,110.94
  4. Step 4: Simplify right side
    317,766.21x = 38,662,801,712.21
  5. Step 5: Solve for x
    x = 38,662,801,712.21/317,766.21
  6. Step 6: Final answer
    x = 121,670.59

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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.