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Finding the Fourth Proportional to 363,411.80, 544,080.90 and 321,939.80

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Solution

The fourth proportional to 363,411.80, 544,080.90 and 321,939.80 is: 481,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,411.80 : 544,080.90 = 321,939.80 : x
  2. Step 2: Convert to fraction form
    363,411.80/544,080.90 = 321,939.80/x
  3. Step 3: Cross multiply
    363,411.80x = 544,080.90 × 321,939.80
  4. Step 4: Simplify right side
    363,411.80x = 175,161,296,129.82
  5. Step 5: Solve for x
    x = 175,161,296,129.82/363,411.80
  6. Step 6: Final answer
    x = 481,991.22

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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.