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Finding the Fourth Proportional to 478,512.09, 717,879.20 and 162,971.73

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Solution

The fourth proportional to 478,512.09, 717,879.20 and 162,971.73 is: 244,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,512.09 : 717,879.20 = 162,971.73 : x
  2. Step 2: Convert to fraction form
    478,512.09/717,879.20 = 162,971.73/x
  3. Step 3: Cross multiply
    478,512.09x = 717,879.20 × 162,971.73
  4. Step 4: Simplify right side
    478,512.09x = 116,994,014,340.16
  5. Step 5: Solve for x
    x = 116,994,014,340.16/478,512.09
  6. Step 6: Final answer
    x = 244,495.42

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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.