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Finding the Fourth Proportional to 217,847,218.60, 326,770,827.90 and 201,219,020.20

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Solution

The fourth proportional to 217,847,218.60, 326,770,827.90 and 201,219,020.20 is: 301,828,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,847,218.60 : 326,770,827.90 = 201,219,020.20 : x
  2. Step 2: Convert to fraction form
    217,847,218.60/326,770,827.90 = 201,219,020.20/x
  3. Step 3: Cross multiply
    217,847,218.60x = 326,770,827.90 × 201,219,020.20
  4. Step 4: Simplify right side
    217,847,218.60x = 65,752,505,819,980,816
  5. Step 5: Solve for x
    x = 65,752,505,819,980,816/217,847,218.60
  6. Step 6: Final answer
    x = 301,828,530.30

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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.