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Finding the Fourth Proportional to 496,090.88, 684,700.49 and 281,231.80

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Solution

The fourth proportional to 496,090.88, 684,700.49 and 281,231.80 is: 388,153.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,090.88 : 684,700.49 = 281,231.80 : x
  2. Step 2: Convert to fraction form
    496,090.88/684,700.49 = 281,231.80/x
  3. Step 3: Cross multiply
    496,090.88x = 684,700.49 × 281,231.80
  4. Step 4: Simplify right side
    496,090.88x = 192,559,550,254.91
  5. Step 5: Solve for x
    x = 192,559,550,254.91/496,090.88
  6. Step 6: Final answer
    x = 388,153.78

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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.