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Finding the Fourth Proportional to 415,575.37, 623,398.43 and 131,189.85

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Solution

The fourth proportional to 415,575.37, 623,398.43 and 131,189.85 is: 196,795.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,575.37 : 623,398.43 = 131,189.85 : x
  2. Step 2: Convert to fraction form
    415,575.37/623,398.43 = 131,189.85/x
  3. Step 3: Cross multiply
    415,575.37x = 623,398.43 × 131,189.85
  4. Step 4: Simplify right side
    415,575.37x = 81,783,546,521.94
  5. Step 5: Solve for x
    x = 81,783,546,521.94/415,575.37
  6. Step 6: Final answer
    x = 196,795.94

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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.