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Finding the Fourth Proportional to 298,679.40, 446,723.10 and 267,316.20

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Solution

The fourth proportional to 298,679.40, 446,723.10 and 267,316.20 is: 399,814.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,679.40 : 446,723.10 = 267,316.20 : x
  2. Step 2: Convert to fraction form
    298,679.40/446,723.10 = 267,316.20/x
  3. Step 3: Cross multiply
    298,679.40x = 446,723.10 × 267,316.20
  4. Step 4: Simplify right side
    298,679.40x = 119,416,321,544.22
  5. Step 5: Solve for x
    x = 119,416,321,544.22/298,679.40
  6. Step 6: Final answer
    x = 399,814.39

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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.