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Finding the Fourth Proportional to 298,940.64, 412,304.72 and 191,520.60

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Solution

The fourth proportional to 298,940.64, 412,304.72 and 191,520.60 is: 264,148.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,940.64 : 412,304.72 = 191,520.60 : x
  2. Step 2: Convert to fraction form
    298,940.64/412,304.72 = 191,520.60/x
  3. Step 3: Cross multiply
    298,940.64x = 412,304.72 × 191,520.60
  4. Step 4: Simplify right side
    298,940.64x = 78,964,847,357.23
  5. Step 5: Solve for x
    x = 78,964,847,357.23/298,940.64
  6. Step 6: Final answer
    x = 264,148.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.