Home / 198,913,999.20-298,370,998.80-145,166,287.20

Finding the Fourth Proportional to 198,913,999.20, 298,370,998.80 and 145,166,287.20

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Solution

The fourth proportional to 198,913,999.20, 298,370,998.80 and 145,166,287.20 is: 217,749,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,913,999.20 : 298,370,998.80 = 145,166,287.20 : x
  2. Step 2: Convert to fraction form
    198,913,999.20/298,370,998.80 = 145,166,287.20/x
  3. Step 3: Cross multiply
    198,913,999.20x = 298,370,998.80 × 145,166,287.20
  4. Step 4: Simplify right side
    198,913,999.20x = 43,313,410,103,951,656
  5. Step 5: Solve for x
    x = 43,313,410,103,951,656/198,913,999.20
  6. Step 6: Final answer
    x = 217,749,430.80

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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.