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Finding the Fourth Proportional to 443,234,019.20, 664,851,028.80 and 259,568,009.60

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Solution

The fourth proportional to 443,234,019.20, 664,851,028.80 and 259,568,009.60 is: 389,352,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,234,019.20 : 664,851,028.80 = 259,568,009.60 : x
  2. Step 2: Convert to fraction form
    443,234,019.20/664,851,028.80 = 259,568,009.60/x
  3. Step 3: Cross multiply
    443,234,019.20x = 664,851,028.80 × 259,568,009.60
  4. Step 4: Simplify right side
    443,234,019.20x = 172,574,058,226,128,256
  5. Step 5: Solve for x
    x = 172,574,058,226,128,256/443,234,019.20
  6. Step 6: Final answer
    x = 389,352,014.40

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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.