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Finding the Fourth Proportional to 445,818.65, 615,229.64 and 254,836.15

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Solution

The fourth proportional to 445,818.65, 615,229.64 and 254,836.15 is: 351,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,818.65 : 615,229.64 = 254,836.15 : x
  2. Step 2: Convert to fraction form
    445,818.65/615,229.64 = 254,836.15/x
  3. Step 3: Cross multiply
    445,818.65x = 615,229.64 × 254,836.15
  4. Step 4: Simplify right side
    445,818.65x = 156,782,751,549.31
  5. Step 5: Solve for x
    x = 156,782,751,549.31/445,818.65
  6. Step 6: Final answer
    x = 351,673.83

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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.