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Finding the Fourth Proportional to 330,349.40, 455,874.52 and 192,519.55

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Solution

The fourth proportional to 330,349.40, 455,874.52 and 192,519.55 is: 265,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,349.40 : 455,874.52 = 192,519.55 : x
  2. Step 2: Convert to fraction form
    330,349.40/455,874.52 = 192,519.55/x
  3. Step 3: Cross multiply
    330,349.40x = 455,874.52 × 192,519.55
  4. Step 4: Simplify right side
    330,349.40x = 87,764,754,204.90
  5. Step 5: Solve for x
    x = 87,764,754,204.90/330,349.40
  6. Step 6: Final answer
    x = 265,672.51

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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.