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Finding the Fourth Proportional to 324,156.60, 486,234.90 and 113,815.80

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Solution

The fourth proportional to 324,156.60, 486,234.90 and 113,815.80 is: 170,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,156.60 : 486,234.90 = 113,815.80 : x
  2. Step 2: Convert to fraction form
    324,156.60/486,234.90 = 113,815.80/x
  3. Step 3: Cross multiply
    324,156.60x = 486,234.90 × 113,815.80
  4. Step 4: Simplify right side
    324,156.60x = 55,341,214,131.42
  5. Step 5: Solve for x
    x = 55,341,214,131.42/324,156.60
  6. Step 6: Final answer
    x = 170,723.70

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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.