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Finding the Fourth Proportional to 445,141.28, 666,224.72 and 264,640.88

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Solution

The fourth proportional to 445,141.28, 666,224.72 and 264,640.88 is: 396,077.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,141.28 : 666,224.72 = 264,640.88 : x
  2. Step 2: Convert to fraction form
    445,141.28/666,224.72 = 264,640.88/x
  3. Step 3: Cross multiply
    445,141.28x = 666,224.72 × 264,640.88
  4. Step 4: Simplify right side
    445,141.28x = 176,310,296,178.55
  5. Step 5: Solve for x
    x = 176,310,296,178.55/445,141.28
  6. Step 6: Final answer
    x = 396,077.16

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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.