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Finding the Fourth Proportional to 200,421.86, 300,660.44 and 67,340.16

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Solution

The fourth proportional to 200,421.86, 300,660.44 and 67,340.16 is: 101,019.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,421.86 : 300,660.44 = 67,340.16 : x
  2. Step 2: Convert to fraction form
    200,421.86/300,660.44 = 67,340.16/x
  3. Step 3: Cross multiply
    200,421.86x = 300,660.44 × 67,340.16
  4. Step 4: Simplify right side
    200,421.86x = 20,246,521,798.57
  5. Step 5: Solve for x
    x = 20,246,521,798.57/200,421.86
  6. Step 6: Final answer
    x = 101,019.53

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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.