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Finding the Fourth Proportional to 216,915.54, 325,297.11 and 65,067.35

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Solution

The fourth proportional to 216,915.54, 325,297.11 and 65,067.35 is: 97,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,915.54 : 325,297.11 = 65,067.35 : x
  2. Step 2: Convert to fraction form
    216,915.54/325,297.11 = 65,067.35/x
  3. Step 3: Cross multiply
    216,915.54x = 325,297.11 × 65,067.35
  4. Step 4: Simplify right side
    216,915.54x = 21,166,221,357.67
  5. Step 5: Solve for x
    x = 21,166,221,357.67/216,915.54
  6. Step 6: Final answer
    x = 97,578.17

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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.