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Finding the Fourth Proportional to 422,625.21, 634,041.57 and 123,108.60

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Solution

The fourth proportional to 422,625.21, 634,041.57 and 123,108.60 is: 184,693.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,625.21 : 634,041.57 = 123,108.60 : x
  2. Step 2: Convert to fraction form
    422,625.21/634,041.57 = 123,108.60/x
  3. Step 3: Cross multiply
    422,625.21x = 634,041.57 × 123,108.60
  4. Step 4: Simplify right side
    422,625.21x = 78,055,970,024.50
  5. Step 5: Solve for x
    x = 78,055,970,024.50/422,625.21
  6. Step 6: Final answer
    x = 184,693.12

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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.