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Finding the Fourth Proportional to 298,808.40, 446,916.60 and 267,445.20

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Solution

The fourth proportional to 298,808.40, 446,916.60 and 267,445.20 is: 400,007.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,808.40 : 446,916.60 = 267,445.20 : x
  2. Step 2: Convert to fraction form
    298,808.40/446,916.60 = 267,445.20/x
  3. Step 3: Cross multiply
    298,808.40x = 446,916.60 × 267,445.20
  4. Step 4: Simplify right side
    298,808.40x = 119,525,699,470.32
  5. Step 5: Solve for x
    x = 119,525,699,470.32/298,808.40
  6. Step 6: Final answer
    x = 400,007.83

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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.