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Finding the Fourth Proportional to 298,690.40, 446,739.60 and 267,327.20

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Solution

The fourth proportional to 298,690.40, 446,739.60 and 267,327.20 is: 399,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,690.40 : 446,739.60 = 267,327.20 : x
  2. Step 2: Convert to fraction form
    298,690.40/446,739.60 = 267,327.20/x
  3. Step 3: Cross multiply
    298,690.40x = 446,739.60 × 267,327.20
  4. Step 4: Simplify right side
    298,690.40x = 119,425,646,397.12
  5. Step 5: Solve for x
    x = 119,425,646,397.12/298,690.40
  6. Step 6: Final answer
    x = 399,830.88

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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.