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Finding the Fourth Proportional to 478,236.26, 717,398.40 and 123,251.60

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Solution

The fourth proportional to 478,236.26, 717,398.40 and 123,251.60 is: 184,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,236.26 : 717,398.40 = 123,251.60 : x
  2. Step 2: Convert to fraction form
    478,236.26/717,398.40 = 123,251.60/x
  3. Step 3: Cross multiply
    478,236.26x = 717,398.40 × 123,251.60
  4. Step 4: Simplify right side
    478,236.26x = 88,420,500,637.44
  5. Step 5: Solve for x
    x = 88,420,500,637.44/478,236.26
  6. Step 6: Final answer
    x = 184,888.74

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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.