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Finding the Fourth Proportional to 494,083.02, 681,816.84 and 279,218.40

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Solution

The fourth proportional to 494,083.02, 681,816.84 and 279,218.40 is: 385,311.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,083.02 : 681,816.84 = 279,218.40 : x
  2. Step 2: Convert to fraction form
    494,083.02/681,816.84 = 279,218.40/x
  3. Step 3: Cross multiply
    494,083.02x = 681,816.84 × 279,218.40
  4. Step 4: Simplify right side
    494,083.02x = 190,375,807,157.86
  5. Step 5: Solve for x
    x = 190,375,807,157.86/494,083.02
  6. Step 6: Final answer
    x = 385,311.37

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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.