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Finding the Fourth Proportional to 415,395.90, 623,044.44 and 134,912.88

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Solution

The fourth proportional to 415,395.90, 623,044.44 and 134,912.88 is: 202,353.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,395.90 : 623,044.44 = 134,912.88 : x
  2. Step 2: Convert to fraction form
    415,395.90/623,044.44 = 134,912.88/x
  3. Step 3: Cross multiply
    415,395.90x = 623,044.44 × 134,912.88
  4. Step 4: Simplify right side
    415,395.90x = 84,056,719,768.39
  5. Step 5: Solve for x
    x = 84,056,719,768.39/415,395.90
  6. Step 6: Final answer
    x = 202,353.27

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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.