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Finding the Fourth Proportional to 262,962.60, 394,443.90 and 129,863.40

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Solution

The fourth proportional to 262,962.60, 394,443.90 and 129,863.40 is: 194,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,962.60 : 394,443.90 = 129,863.40 : x
  2. Step 2: Convert to fraction form
    262,962.60/394,443.90 = 129,863.40/x
  3. Step 3: Cross multiply
    262,962.60x = 394,443.90 × 129,863.40
  4. Step 4: Simplify right side
    262,962.60x = 51,223,825,963.26
  5. Step 5: Solve for x
    x = 51,223,825,963.26/262,962.60
  6. Step 6: Final answer
    x = 194,795.10

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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.