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Finding the Fourth Proportional to 480,917, 663,696.18 and 268,949

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Solution

The fourth proportional to 480,917, 663,696.18 and 268,949 is: 371,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,917 : 663,696.18 = 268,949 : x
  2. Step 2: Convert to fraction form
    480,917/663,696.18 = 268,949/x
  3. Step 3: Cross multiply
    480,917x = 663,696.18 × 268,949
  4. Step 4: Simplify right side
    480,917x = 178,500,423,914.82
  5. Step 5: Solve for x
    x = 178,500,423,914.82/480,917
  6. Step 6: Final answer
    x = 371,166.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.