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Finding the Fourth Proportional to 262,626.57, 394,062.86 and 129,434.18

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Solution

The fourth proportional to 262,626.57, 394,062.86 and 129,434.18 is: 194,211.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,626.57 : 394,062.86 = 129,434.18 : x
  2. Step 2: Convert to fraction form
    262,626.57/394,062.86 = 129,434.18/x
  3. Step 3: Cross multiply
    262,626.57x = 394,062.86 × 129,434.18
  4. Step 4: Simplify right side
    262,626.57x = 51,005,201,505.83
  5. Step 5: Solve for x
    x = 51,005,201,505.83/262,626.57
  6. Step 6: Final answer
    x = 194,211.89

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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.