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Finding the Fourth Proportional to 277,958.82, 416,948.25 and 78,296.66

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Solution

The fourth proportional to 277,958.82, 416,948.25 and 78,296.66 is: 117,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,958.82 : 416,948.25 = 78,296.66 : x
  2. Step 2: Convert to fraction form
    277,958.82/416,948.25 = 78,296.66/x
  3. Step 3: Cross multiply
    277,958.82x = 416,948.25 × 78,296.66
  4. Step 4: Simplify right side
    277,958.82x = 32,645,653,283.10
  5. Step 5: Solve for x
    x = 32,645,653,283.10/277,958.82
  6. Step 6: Final answer
    x = 117,447.80

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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.