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Finding the Fourth Proportional to 353,580.80, 529,910.40 and 164,019.20

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Solution

The fourth proportional to 353,580.80, 529,910.40 and 164,019.20 is: 245,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,580.80 : 529,910.40 = 164,019.20 : x
  2. Step 2: Convert to fraction form
    353,580.80/529,910.40 = 164,019.20/x
  3. Step 3: Cross multiply
    353,580.80x = 529,910.40 × 164,019.20
  4. Step 4: Simplify right side
    353,580.80x = 86,915,479,879.68
  5. Step 5: Solve for x
    x = 86,915,479,879.68/353,580.80
  6. Step 6: Final answer
    x = 245,815.04

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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.