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Finding the Fourth Proportional to 478,234.26, 717,395.40 and 123,249.60

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Solution

The fourth proportional to 478,234.26, 717,395.40 and 123,249.60 is: 184,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,234.26 : 717,395.40 = 123,249.60 : x
  2. Step 2: Convert to fraction form
    478,234.26/717,395.40 = 123,249.60/x
  3. Step 3: Cross multiply
    478,234.26x = 717,395.40 × 123,249.60
  4. Step 4: Simplify right side
    478,234.26x = 88,418,696,091.84
  5. Step 5: Solve for x
    x = 88,418,696,091.84/478,234.26
  6. Step 6: Final answer
    x = 184,885.74

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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.