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Finding the Fourth Proportional to 200,439.30, 300,686.64 and 67,357.62

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Solution

The fourth proportional to 200,439.30, 300,686.64 and 67,357.62 is: 101,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,439.30 : 300,686.64 = 67,357.62 : x
  2. Step 2: Convert to fraction form
    200,439.30/300,686.64 = 67,357.62/x
  3. Step 3: Cross multiply
    200,439.30x = 300,686.64 × 67,357.62
  4. Step 4: Simplify right side
    200,439.30x = 20,253,536,436.20
  5. Step 5: Solve for x
    x = 20,253,536,436.20/200,439.30
  6. Step 6: Final answer
    x = 101,045.74

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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.