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Finding the Fourth Proportional to 298,940.09, 412,304.04 and 191,520.11

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Solution

The fourth proportional to 298,940.09, 412,304.04 and 191,520.11 is: 264,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,940.09 : 412,304.04 = 191,520.11 : x
  2. Step 2: Convert to fraction form
    298,940.09/412,304.04 = 191,520.11/x
  3. Step 3: Cross multiply
    298,940.09x = 412,304.04 × 191,520.11
  4. Step 4: Simplify right side
    298,940.09x = 78,964,516,125.00
  5. Step 5: Solve for x
    x = 78,964,516,125.00/298,940.09
  6. Step 6: Final answer
    x = 264,148.30

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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.