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Finding the Fourth Proportional to 324,334.60, 486,501.90 and 212,360.20

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Solution

The fourth proportional to 324,334.60, 486,501.90 and 212,360.20 is: 318,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,334.60 : 486,501.90 = 212,360.20 : x
  2. Step 2: Convert to fraction form
    324,334.60/486,501.90 = 212,360.20/x
  3. Step 3: Cross multiply
    324,334.60x = 486,501.90 × 212,360.20
  4. Step 4: Simplify right side
    324,334.60x = 103,313,640,784.38
  5. Step 5: Solve for x
    x = 103,313,640,784.38/324,334.60
  6. Step 6: Final answer
    x = 318,540.30

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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.