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Finding the Fourth Proportional to 324,154.41, 486,270.39 and 99,485.43

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Solution

The fourth proportional to 324,154.41, 486,270.39 and 99,485.43 is: 149,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,154.41 : 486,270.39 = 99,485.43 : x
  2. Step 2: Convert to fraction form
    324,154.41/486,270.39 = 99,485.43/x
  3. Step 3: Cross multiply
    324,154.41x = 486,270.39 × 99,485.43
  4. Step 4: Simplify right side
    324,154.41x = 48,376,821,225.92
  5. Step 5: Solve for x
    x = 48,376,821,225.92/324,154.41
  6. Step 6: Final answer
    x = 149,240.05

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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.