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Finding the Fourth Proportional to 298,620.90, 446,635.35 and 267,257.70

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Solution

The fourth proportional to 298,620.90, 446,635.35 and 267,257.70 is: 399,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,620.90 : 446,635.35 = 267,257.70 : x
  2. Step 2: Convert to fraction form
    298,620.90/446,635.35 = 267,257.70/x
  3. Step 3: Cross multiply
    298,620.90x = 446,635.35 × 267,257.70
  4. Step 4: Simplify right side
    298,620.90x = 119,366,736,379.70
  5. Step 5: Solve for x
    x = 119,366,736,379.70/298,620.90
  6. Step 6: Final answer
    x = 399,726.66

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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.