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Finding the Fourth Proportional to 426,334.80, 639,793.80 and 236,794.80

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Solution

The fourth proportional to 426,334.80, 639,793.80 and 236,794.80 is: 355,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,334.80 : 639,793.80 = 236,794.80 : x
  2. Step 2: Convert to fraction form
    426,334.80/639,793.80 = 236,794.80/x
  3. Step 3: Cross multiply
    426,334.80x = 639,793.80 × 236,794.80
  4. Step 4: Simplify right side
    426,334.80x = 151,499,844,912.24
  5. Step 5: Solve for x
    x = 151,499,844,912.24/426,334.80
  6. Step 6: Final answer
    x = 355,354.16

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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.