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Finding the Fourth Proportional to 299,384.20, 449,195.10 and 121,904.20

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Solution

The fourth proportional to 299,384.20, 449,195.10 and 121,904.20 is: 182,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,384.20 : 449,195.10 = 121,904.20 : x
  2. Step 2: Convert to fraction form
    299,384.20/449,195.10 = 121,904.20/x
  3. Step 3: Cross multiply
    299,384.20x = 449,195.10 × 121,904.20
  4. Step 4: Simplify right side
    299,384.20x = 54,758,769,309.42
  5. Step 5: Solve for x
    x = 54,758,769,309.42/299,384.20
  6. Step 6: Final answer
    x = 182,904.67

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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.