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Finding the Fourth Proportional to 438,796.50, 658,194.75 and 106,372.50

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Solution

The fourth proportional to 438,796.50, 658,194.75 and 106,372.50 is: 159,558.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,796.50 : 658,194.75 = 106,372.50 : x
  2. Step 2: Convert to fraction form
    438,796.50/658,194.75 = 106,372.50/x
  3. Step 3: Cross multiply
    438,796.50x = 658,194.75 × 106,372.50
  4. Step 4: Simplify right side
    438,796.50x = 70,013,821,044.38
  5. Step 5: Solve for x
    x = 70,013,821,044.38/438,796.50
  6. Step 6: Final answer
    x = 159,558.75

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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.