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Finding the Fourth Proportional to 445,213.46, 666,223.88 and 385,447.52

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Solution

The fourth proportional to 445,213.46, 666,223.88 and 385,447.52 is: 576,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,213.46 : 666,223.88 = 385,447.52 : x
  2. Step 2: Convert to fraction form
    445,213.46/666,223.88 = 385,447.52/x
  3. Step 3: Cross multiply
    445,213.46x = 666,223.88 × 385,447.52
  4. Step 4: Simplify right side
    445,213.46x = 256,794,339,943.28
  5. Step 5: Solve for x
    x = 256,794,339,943.28/445,213.46
  6. Step 6: Final answer
    x = 576,789.25

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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.