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Finding the Fourth Proportional to 200,530.32, 300,784.36 and 67,396.80

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Solution

The fourth proportional to 200,530.32, 300,784.36 and 67,396.80 is: 101,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,530.32 : 300,784.36 = 67,396.80 : x
  2. Step 2: Convert to fraction form
    200,530.32/300,784.36 = 67,396.80/x
  3. Step 3: Cross multiply
    200,530.32x = 300,784.36 × 67,396.80
  4. Step 4: Simplify right side
    200,530.32x = 20,271,903,354.05
  5. Step 5: Solve for x
    x = 20,271,903,354.05/200,530.32
  6. Step 6: Final answer
    x = 101,091.46

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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.