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Finding the Fourth Proportional to 445,185.28, 667,332.42 and 220,709.98

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Solution

The fourth proportional to 445,185.28, 667,332.42 and 220,709.98 is: 330,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,185.28 : 667,332.42 = 220,709.98 : x
  2. Step 2: Convert to fraction form
    445,185.28/667,332.42 = 220,709.98/x
  3. Step 3: Cross multiply
    445,185.28x = 667,332.42 × 220,709.98
  4. Step 4: Simplify right side
    445,185.28x = 147,286,925,071.55
  5. Step 5: Solve for x
    x = 147,286,925,071.55/445,185.28
  6. Step 6: Final answer
    x = 330,844.10

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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.