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Finding the Fourth Proportional to 201,654.10, 302,481.15 and 191,812.60

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Solution

The fourth proportional to 201,654.10, 302,481.15 and 191,812.60 is: 287,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,654.10 : 302,481.15 = 191,812.60 : x
  2. Step 2: Convert to fraction form
    201,654.10/302,481.15 = 191,812.60/x
  3. Step 3: Cross multiply
    201,654.10x = 302,481.15 × 191,812.60
  4. Step 4: Simplify right side
    201,654.10x = 58,019,695,832.49
  5. Step 5: Solve for x
    x = 58,019,695,832.49/201,654.10
  6. Step 6: Final answer
    x = 287,718.90

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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.