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Finding the Fourth Proportional to 317,894.06, 476,841.31 and 81,236.96

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Solution

The fourth proportional to 317,894.06, 476,841.31 and 81,236.96 is: 121,855.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,894.06 : 476,841.31 = 81,236.96 : x
  2. Step 2: Convert to fraction form
    317,894.06/476,841.31 = 81,236.96/x
  3. Step 3: Cross multiply
    317,894.06x = 476,841.31 × 81,236.96
  4. Step 4: Simplify right side
    317,894.06x = 38,737,138,426.82
  5. Step 5: Solve for x
    x = 38,737,138,426.82/317,894.06
  6. Step 6: Final answer
    x = 121,855.50

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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.