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Finding the Fourth Proportional to 486,560.10, 671,453.91 and 271,699.50

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Solution

The fourth proportional to 486,560.10, 671,453.91 and 271,699.50 is: 374,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,560.10 : 671,453.91 = 271,699.50 : x
  2. Step 2: Convert to fraction form
    486,560.10/671,453.91 = 271,699.50/x
  3. Step 3: Cross multiply
    486,560.10x = 671,453.91 × 271,699.50
  4. Step 4: Simplify right side
    486,560.10x = 182,433,691,620.05
  5. Step 5: Solve for x
    x = 182,433,691,620.05/486,560.10
  6. Step 6: Final answer
    x = 374,945.85

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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.