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Finding the Fourth Proportional to 415,459.56, 623,273.17 and 131,194.51

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Solution

The fourth proportional to 415,459.56, 623,273.17 and 131,194.51 is: 196,818.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,459.56 : 623,273.17 = 131,194.51 : x
  2. Step 2: Convert to fraction form
    415,459.56/623,273.17 = 131,194.51/x
  3. Step 3: Cross multiply
    415,459.56x = 623,273.17 × 131,194.51
  4. Step 4: Simplify right side
    415,459.56x = 81,770,018,134.30
  5. Step 5: Solve for x
    x = 81,770,018,134.30/415,459.56
  6. Step 6: Final answer
    x = 196,818.24

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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.