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Finding the Fourth Proportional to 499,027.19, 687,940.47 and 355,538.12

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Solution

The fourth proportional to 499,027.19, 687,940.47 and 355,538.12 is: 490,131.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,027.19 : 687,940.47 = 355,538.12 : x
  2. Step 2: Convert to fraction form
    499,027.19/687,940.47 = 355,538.12/x
  3. Step 3: Cross multiply
    499,027.19x = 687,940.47 × 355,538.12
  4. Step 4: Simplify right side
    499,027.19x = 244,589,057,936.01
  5. Step 5: Solve for x
    x = 244,589,057,936.01/499,027.19
  6. Step 6: Final answer
    x = 490,131.73

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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.