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Finding the Fourth Proportional to 260,190.20, 389,629.20 and 207,702.20

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Solution

The fourth proportional to 260,190.20, 389,629.20 and 207,702.20 is: 311,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,190.20 : 389,629.20 = 207,702.20 : x
  2. Step 2: Convert to fraction form
    260,190.20/389,629.20 = 207,702.20/x
  3. Step 3: Cross multiply
    260,190.20x = 389,629.20 × 207,702.20
  4. Step 4: Simplify right side
    260,190.20x = 80,926,842,024.24
  5. Step 5: Solve for x
    x = 80,926,842,024.24/260,190.20
  6. Step 6: Final answer
    x = 311,029.55

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1.5x scale

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.