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Finding the Fourth Proportional to 478,074.36, 659,593.62 and 271,308.48

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Solution

The fourth proportional to 478,074.36, 659,593.62 and 271,308.48 is: 374,321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,074.36 : 659,593.62 = 271,308.48 : x
  2. Step 2: Convert to fraction form
    478,074.36/659,593.62 = 271,308.48/x
  3. Step 3: Cross multiply
    478,074.36x = 659,593.62 × 271,308.48
  4. Step 4: Simplify right side
    478,074.36x = 178,953,342,459.90
  5. Step 5: Solve for x
    x = 178,953,342,459.90/478,074.36
  6. Step 6: Final answer
    x = 374,321.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.