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Finding the Fourth Proportional to 358,615.31, 494,892.78 and 197,485.34

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Solution

The fourth proportional to 358,615.31, 494,892.78 and 197,485.34 is: 272,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,615.31 : 494,892.78 = 197,485.34 : x
  2. Step 2: Convert to fraction form
    358,615.31/494,892.78 = 197,485.34/x
  3. Step 3: Cross multiply
    358,615.31x = 494,892.78 × 197,485.34
  4. Step 4: Simplify right side
    358,615.31x = 97,734,068,921.85
  5. Step 5: Solve for x
    x = 97,734,068,921.85/358,615.31
  6. Step 6: Final answer
    x = 272,531.78

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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.