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Finding the Fourth Proportional to 216,830.10, 325,269.45 and 67,069.20

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Solution

The fourth proportional to 216,830.10, 325,269.45 and 67,069.20 is: 100,611.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,830.10 : 325,269.45 = 67,069.20 : x
  2. Step 2: Convert to fraction form
    216,830.10/325,269.45 = 67,069.20/x
  3. Step 3: Cross multiply
    216,830.10x = 325,269.45 × 67,069.20
  4. Step 4: Simplify right side
    216,830.10x = 21,815,561,795.94
  5. Step 5: Solve for x
    x = 21,815,561,795.94/216,830.10
  6. Step 6: Final answer
    x = 100,611.32

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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.