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Finding the Fourth Proportional to 324,234.80, 486,425.10 and 99,605.60

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Solution

The fourth proportional to 324,234.80, 486,425.10 and 99,605.60 is: 149,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,234.80 : 486,425.10 = 99,605.60 : x
  2. Step 2: Convert to fraction form
    324,234.80/486,425.10 = 99,605.60/x
  3. Step 3: Cross multiply
    324,234.80x = 486,425.10 × 99,605.60
  4. Step 4: Simplify right side
    324,234.80x = 48,450,663,940.56
  5. Step 5: Solve for x
    x = 48,450,663,940.56/324,234.80
  6. Step 6: Final answer
    x = 149,430.80

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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.