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Finding the Fourth Proportional to 655,080.20, 983,138.70 and 255,912.20

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Solution

The fourth proportional to 655,080.20, 983,138.70 and 255,912.20 is: 384,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,080.20 : 983,138.70 = 255,912.20 : x
  2. Step 2: Convert to fraction form
    655,080.20/983,138.70 = 255,912.20/x
  3. Step 3: Cross multiply
    655,080.20x = 983,138.70 × 255,912.20
  4. Step 4: Simplify right side
    655,080.20x = 251,597,187,622.14
  5. Step 5: Solve for x
    x = 251,597,187,622.14/655,080.20
  6. Step 6: Final answer
    x = 384,070.82

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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.