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Finding the Fourth Proportional to 539,142.96, 743,687.60 and 345,485.48

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Solution

The fourth proportional to 539,142.96, 743,687.60 and 345,485.48 is: 476,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,142.96 : 743,687.60 = 345,485.48 : x
  2. Step 2: Convert to fraction form
    539,142.96/743,687.60 = 345,485.48/x
  3. Step 3: Cross multiply
    539,142.96x = 743,687.60 × 345,485.48
  4. Step 4: Simplify right side
    539,142.96x = 256,933,267,456.05
  5. Step 5: Solve for x
    x = 256,933,267,456.05/539,142.96
  6. Step 6: Final answer
    x = 476,558.70

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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.