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Finding the Fourth Proportional to 324,064.60, 486,096.90 and 212,090.20

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Solution

The fourth proportional to 324,064.60, 486,096.90 and 212,090.20 is: 318,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,064.60 : 486,096.90 = 212,090.20 : x
  2. Step 2: Convert to fraction form
    324,064.60/486,096.90 = 212,090.20/x
  3. Step 3: Cross multiply
    324,064.60x = 486,096.90 × 212,090.20
  4. Step 4: Simplify right side
    324,064.60x = 103,096,388,740.38
  5. Step 5: Solve for x
    x = 103,096,388,740.38/324,064.60
  6. Step 6: Final answer
    x = 318,135.30

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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.