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Finding the Fourth Proportional to 298,358.96, 447,604.20 and 129,906.32

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Solution

The fourth proportional to 298,358.96, 447,604.20 and 129,906.32 is: 194,888.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,358.96 : 447,604.20 = 129,906.32 : x
  2. Step 2: Convert to fraction form
    298,358.96/447,604.20 = 129,906.32/x
  3. Step 3: Cross multiply
    298,358.96x = 447,604.20 × 129,906.32
  4. Step 4: Simplify right side
    298,358.96x = 58,146,614,438.54
  5. Step 5: Solve for x
    x = 58,146,614,438.54/298,358.96
  6. Step 6: Final answer
    x = 194,888.11

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1.5x scale

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.