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Finding the Fourth Proportional to 201,399.38, 302,079.54 and 61,159.22

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Solution

The fourth proportional to 201,399.38, 302,079.54 and 61,159.22 is: 91,732.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,399.38 : 302,079.54 = 61,159.22 : x
  2. Step 2: Convert to fraction form
    201,399.38/302,079.54 = 61,159.22/x
  3. Step 3: Cross multiply
    201,399.38x = 302,079.54 × 61,159.22
  4. Step 4: Simplify right side
    201,399.38x = 18,474,949,044.36
  5. Step 5: Solve for x
    x = 18,474,949,044.36/201,399.38
  6. Step 6: Final answer
    x = 91,732.90

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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.