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Finding the Fourth Proportional to 216,915.78, 325,252.94 and 67,113.56

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Solution

The fourth proportional to 216,915.78, 325,252.94 and 67,113.56 is: 100,632.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,915.78 : 325,252.94 = 67,113.56 : x
  2. Step 2: Convert to fraction form
    216,915.78/325,252.94 = 67,113.56/x
  3. Step 3: Cross multiply
    216,915.78x = 325,252.94 × 67,113.56
  4. Step 4: Simplify right side
    216,915.78x = 21,828,882,703.87
  5. Step 5: Solve for x
    x = 21,828,882,703.87/216,915.78
  6. Step 6: Final answer
    x = 100,632.99

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1.5x scale

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.