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Finding the Fourth Proportional to 422,699.70, 634,060.48 and 107,181.20

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Solution

The fourth proportional to 422,699.70, 634,060.48 and 107,181.20 is: 160,774.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,699.70 : 634,060.48 = 107,181.20 : x
  2. Step 2: Convert to fraction form
    422,699.70/634,060.48 = 107,181.20/x
  3. Step 3: Cross multiply
    422,699.70x = 634,060.48 × 107,181.20
  4. Step 4: Simplify right side
    422,699.70x = 67,959,363,118.98
  5. Step 5: Solve for x
    x = 67,959,363,118.98/422,699.70
  6. Step 6: Final answer
    x = 160,774.57

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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.