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Finding the Fourth Proportional to 354,308, 488,964.48 and 203,414.72

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Solution

The fourth proportional to 354,308, 488,964.48 and 203,414.72 is: 280,723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,308 : 488,964.48 = 203,414.72 : x
  2. Step 2: Convert to fraction form
    354,308/488,964.48 = 203,414.72/x
  3. Step 3: Cross multiply
    354,308x = 488,964.48 × 203,414.72
  4. Step 4: Simplify right side
    354,308x = 99,462,572,789.15
  5. Step 5: Solve for x
    x = 99,462,572,789.15/354,308
  6. Step 6: Final answer
    x = 280,723.47

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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.