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Finding the Fourth Proportional to 612,231.94, 918,414.87 and 207,716.21

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Solution

The fourth proportional to 612,231.94, 918,414.87 and 207,716.21 is: 311,597.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,231.94 : 918,414.87 = 207,716.21 : x
  2. Step 2: Convert to fraction form
    612,231.94/918,414.87 = 207,716.21/x
  3. Step 3: Cross multiply
    612,231.94x = 918,414.87 × 207,716.21
  4. Step 4: Simplify right side
    612,231.94x = 190,769,656,004.04
  5. Step 5: Solve for x
    x = 190,769,656,004.04/612,231.94
  6. Step 6: Final answer
    x = 311,597.04

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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.