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Finding the Fourth Proportional to 231,801,605.20, 347,702,407.80 and 139,968,600.40

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Solution

The fourth proportional to 231,801,605.20, 347,702,407.80 and 139,968,600.40 is: 209,952,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,801,605.20 : 347,702,407.80 = 139,968,600.40 : x
  2. Step 2: Convert to fraction form
    231,801,605.20/347,702,407.80 = 139,968,600.40/x
  3. Step 3: Cross multiply
    231,801,605.20x = 347,702,407.80 × 139,968,600.40
  4. Step 4: Simplify right side
    231,801,605.20x = 48,667,419,375,476,048
  5. Step 5: Solve for x
    x = 48,667,419,375,476,048/231,801,605.20
  6. Step 6: Final answer
    x = 209,952,900.60

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1.5x scale

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.