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Finding the Fourth Proportional to 200,530.18, 300,784.19 and 67,396.69

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Solution

The fourth proportional to 200,530.18, 300,784.19 and 67,396.69 is: 101,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,530.18 : 300,784.19 = 67,396.69 : x
  2. Step 2: Convert to fraction form
    200,530.18/300,784.19 = 67,396.69/x
  3. Step 3: Cross multiply
    200,530.18x = 300,784.19 × 67,396.69
  4. Step 4: Simplify right side
    200,530.18x = 20,271,858,810.33
  5. Step 5: Solve for x
    x = 20,271,858,810.33/200,530.18
  6. Step 6: Final answer
    x = 101,091.31

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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.