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Finding the Fourth Proportional to 613,221.88, 919,944.24 and 253,393.60

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Solution

The fourth proportional to 613,221.88, 919,944.24 and 253,393.60 is: 380,136.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,221.88 : 919,944.24 = 253,393.60 : x
  2. Step 2: Convert to fraction form
    613,221.88/919,944.24 = 253,393.60/x
  3. Step 3: Cross multiply
    613,221.88x = 919,944.24 × 253,393.60
  4. Step 4: Simplify right side
    613,221.88x = 233,107,982,772.86
  5. Step 5: Solve for x
    x = 233,107,982,772.86/613,221.88
  6. Step 6: Final answer
    x = 380,136.44

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1.5x scale

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.