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Finding the Fourth Proportional to 298,520.64, 447,612.48 and 111,456

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Solution

The fourth proportional to 298,520.64, 447,612.48 and 111,456 is: 167,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,520.64 : 447,612.48 = 111,456 : x
  2. Step 2: Convert to fraction form
    298,520.64/447,612.48 = 111,456/x
  3. Step 3: Cross multiply
    298,520.64x = 447,612.48 × 111,456
  4. Step 4: Simplify right side
    298,520.64x = 49,889,096,570.88
  5. Step 5: Solve for x
    x = 49,889,096,570.88/298,520.64
  6. Step 6: Final answer
    x = 167,121.10

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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.