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Finding the Fourth Proportional to 201,889.80, 302,506.65 and 168,428.70

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Solution

The fourth proportional to 201,889.80, 302,506.65 and 168,428.70 is: 252,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,889.80 : 302,506.65 = 168,428.70 : x
  2. Step 2: Convert to fraction form
    201,889.80/302,506.65 = 168,428.70/x
  3. Step 3: Cross multiply
    201,889.80x = 302,506.65 × 168,428.70
  4. Step 4: Simplify right side
    201,889.80x = 50,950,801,800.86
  5. Step 5: Solve for x
    x = 50,950,801,800.86/201,889.80
  6. Step 6: Final answer
    x = 252,369.37

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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.