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Finding the Fourth Proportional to 494,073.55, 681,803.73 and 279,208.90

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Solution

The fourth proportional to 494,073.55, 681,803.73 and 279,208.90 is: 385,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,073.55 : 681,803.73 = 279,208.90 : x
  2. Step 2: Convert to fraction form
    494,073.55/681,803.73 = 279,208.90/x
  3. Step 3: Cross multiply
    494,073.55x = 681,803.73 × 279,208.90
  4. Step 4: Simplify right side
    494,073.55x = 190,365,669,469.20
  5. Step 5: Solve for x
    x = 190,365,669,469.20/494,073.55
  6. Step 6: Final answer
    x = 385,298.24

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1.5x scale

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.