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Finding the Fourth Proportional to 324,070.60, 486,105.90 and 212,096.20

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Solution

The fourth proportional to 324,070.60, 486,105.90 and 212,096.20 is: 318,144.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,070.60 : 486,105.90 = 212,096.20 : x
  2. Step 2: Convert to fraction form
    324,070.60/486,105.90 = 212,096.20/x
  3. Step 3: Cross multiply
    324,070.60x = 486,105.90 × 212,096.20
  4. Step 4: Simplify right side
    324,070.60x = 103,101,214,187.58
  5. Step 5: Solve for x
    x = 103,101,214,187.58/324,070.60
  6. Step 6: Final answer
    x = 318,144.30

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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.