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Finding the Fourth Proportional to 403,291,238.80, 603,425,203.80 and 267,242,342.80

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Solution

The fourth proportional to 403,291,238.80, 603,425,203.80 and 267,242,342.80 is: 399,861,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,291,238.80 : 603,425,203.80 = 267,242,342.80 : x
  2. Step 2: Convert to fraction form
    403,291,238.80/603,425,203.80 = 267,242,342.80/x
  3. Step 3: Cross multiply
    403,291,238.80x = 603,425,203.80 × 267,242,342.80
  4. Step 4: Simplify right side
    403,291,238.80x = 161,260,765,168,079,456
  5. Step 5: Solve for x
    x = 161,260,765,168,079,456/403,291,238.80
  6. Step 6: Final answer
    x = 399,861,811.15

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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.