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Finding the Fourth Proportional to 288,958.20, 432,854.10 and 200,311.80

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Solution

The fourth proportional to 288,958.20, 432,854.10 and 200,311.80 is: 300,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,958.20 : 432,854.10 = 200,311.80 : x
  2. Step 2: Convert to fraction form
    288,958.20/432,854.10 = 200,311.80/x
  3. Step 3: Cross multiply
    288,958.20x = 432,854.10 × 200,311.80
  4. Step 4: Simplify right side
    288,958.20x = 86,705,783,908.38
  5. Step 5: Solve for x
    x = 86,705,783,908.38/288,958.20
  6. Step 6: Final answer
    x = 300,063.41

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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.