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Finding the Fourth Proportional to 354,156.72, 488,718 and 203,244

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Solution

The fourth proportional to 354,156.72, 488,718 and 203,244 is: 280,466.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,156.72 : 488,718 = 203,244 : x
  2. Step 2: Convert to fraction form
    354,156.72/488,718 = 203,244/x
  3. Step 3: Cross multiply
    354,156.72x = 488,718 × 203,244
  4. Step 4: Simplify right side
    354,156.72x = 99,329,001,192
  5. Step 5: Solve for x
    x = 99,329,001,192/354,156.72
  6. Step 6: Final answer
    x = 280,466.23

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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.