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Finding the Fourth Proportional to 655,978.20, 984,197.70 and 235,267.80

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Solution

The fourth proportional to 655,978.20, 984,197.70 and 235,267.80 is: 352,984.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,978.20 : 984,197.70 = 235,267.80 : x
  2. Step 2: Convert to fraction form
    655,978.20/984,197.70 = 235,267.80/x
  3. Step 3: Cross multiply
    655,978.20x = 984,197.70 × 235,267.80
  4. Step 4: Simplify right side
    655,978.20x = 231,550,027,644.06
  5. Step 5: Solve for x
    x = 231,550,027,644.06/655,978.20
  6. Step 6: Final answer
    x = 352,984.33

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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.