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Finding the Fourth Proportional to 354,355.32, 531,442.26 and 104,979

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Solution

The fourth proportional to 354,355.32, 531,442.26 and 104,979 is: 157,441.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,355.32 : 531,442.26 = 104,979 : x
  2. Step 2: Convert to fraction form
    354,355.32/531,442.26 = 104,979/x
  3. Step 3: Cross multiply
    354,355.32x = 531,442.26 × 104,979
  4. Step 4: Simplify right side
    354,355.32x = 55,790,277,012.54
  5. Step 5: Solve for x
    x = 55,790,277,012.54/354,355.32
  6. Step 6: Final answer
    x = 157,441.62

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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.