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Finding the Fourth Proportional to 200,528.55, 300,781.76 and 67,395.06

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Solution

The fourth proportional to 200,528.55, 300,781.76 and 67,395.06 is: 101,088.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,528.55 : 300,781.76 = 67,395.06 : x
  2. Step 2: Convert to fraction form
    200,528.55/300,781.76 = 67,395.06/x
  3. Step 3: Cross multiply
    200,528.55x = 300,781.76 × 67,395.06
  4. Step 4: Simplify right side
    200,528.55x = 20,271,204,425.13
  5. Step 5: Solve for x
    x = 20,271,204,425.13/200,528.55
  6. Step 6: Final answer
    x = 101,088.87

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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.