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Finding the Fourth Proportional to 324,138.20, 486,207.30 and 102,522.20

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Solution

The fourth proportional to 324,138.20, 486,207.30 and 102,522.20 is: 153,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,138.20 : 486,207.30 = 102,522.20 : x
  2. Step 2: Convert to fraction form
    324,138.20/486,207.30 = 102,522.20/x
  3. Step 3: Cross multiply
    324,138.20x = 486,207.30 × 102,522.20
  4. Step 4: Simplify right side
    324,138.20x = 49,847,042,052.06
  5. Step 5: Solve for x
    x = 49,847,042,052.06/324,138.20
  6. Step 6: Final answer
    x = 153,783.30

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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.