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Finding the Fourth Proportional to 262,337.54, 393,542.96 and 129,218.90

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Solution

The fourth proportional to 262,337.54, 393,542.96 and 129,218.90 is: 193,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,337.54 : 393,542.96 = 129,218.90 : x
  2. Step 2: Convert to fraction form
    262,337.54/393,542.96 = 129,218.90/x
  3. Step 3: Cross multiply
    262,337.54x = 393,542.96 × 129,218.90
  4. Step 4: Simplify right side
    262,337.54x = 50,853,185,780.13
  5. Step 5: Solve for x
    x = 50,853,185,780.13/262,337.54
  6. Step 6: Final answer
    x = 193,846.40

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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.