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Finding the Fourth Proportional to 262,867.80, 394,560.90 and 129,898.20

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Solution

The fourth proportional to 262,867.80, 394,560.90 and 129,898.20 is: 194,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,867.80 : 394,560.90 = 129,898.20 : x
  2. Step 2: Convert to fraction form
    262,867.80/394,560.90 = 129,898.20/x
  3. Step 3: Cross multiply
    262,867.80x = 394,560.90 × 129,898.20
  4. Step 4: Simplify right side
    262,867.80x = 51,252,750,700.38
  5. Step 5: Solve for x
    x = 51,252,750,700.38/262,867.80
  6. Step 6: Final answer
    x = 194,975.39

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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.