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Finding the Fourth Proportional to 216,980.38, 325,486.96 and 67,235.78

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Solution

The fourth proportional to 216,980.38, 325,486.96 and 67,235.78 is: 100,858.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,980.38 : 325,486.96 = 67,235.78 : x
  2. Step 2: Convert to fraction form
    216,980.38/325,486.96 = 67,235.78/x
  3. Step 3: Cross multiply
    216,980.38x = 325,486.96 × 67,235.78
  4. Step 4: Simplify right side
    216,980.38x = 21,884,369,635.43
  5. Step 5: Solve for x
    x = 21,884,369,635.43/216,980.38
  6. Step 6: Final answer
    x = 100,858.75

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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.