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Finding the Fourth Proportional to 200,543.04, 300,816.99 and 67,422.78

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Solution

The fourth proportional to 200,543.04, 300,816.99 and 67,422.78 is: 101,134.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,543.04 : 300,816.99 = 67,422.78 : x
  2. Step 2: Convert to fraction form
    200,543.04/300,816.99 = 67,422.78/x
  3. Step 3: Cross multiply
    200,543.04x = 300,816.99 × 67,422.78
  4. Step 4: Simplify right side
    200,543.04x = 20,281,917,737.03
  5. Step 5: Solve for x
    x = 20,281,917,737.03/200,543.04
  6. Step 6: Final answer
    x = 101,134.99

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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.