Home / 262,869.20-394,044.60-129,640.40

Finding the Fourth Proportional to 262,869.20, 394,044.60 and 129,640.40

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Solution

The fourth proportional to 262,869.20, 394,044.60 and 129,640.40 is: 194,332.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,869.20 : 394,044.60 = 129,640.40 : x
  2. Step 2: Convert to fraction form
    262,869.20/394,044.60 = 129,640.40/x
  3. Step 3: Cross multiply
    262,869.20x = 394,044.60 × 129,640.40
  4. Step 4: Simplify right side
    262,869.20x = 51,084,099,561.84
  5. Step 5: Solve for x
    x = 51,084,099,561.84/262,869.20
  6. Step 6: Final answer
    x = 194,332.77

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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.