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Finding the Fourth Proportional to 200,423.53, 300,662.90 and 67,341.81

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Solution

The fourth proportional to 200,423.53, 300,662.90 and 67,341.81 is: 101,021.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,423.53 : 300,662.90 = 67,341.81 : x
  2. Step 2: Convert to fraction form
    200,423.53/300,662.90 = 67,341.81/x
  3. Step 3: Cross multiply
    200,423.53x = 300,662.90 × 67,341.81
  4. Step 4: Simplify right side
    200,423.53x = 20,247,183,549.14
  5. Step 5: Solve for x
    x = 20,247,183,549.14/200,423.53
  6. Step 6: Final answer
    x = 101,021.99

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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.