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Finding the Fourth Proportional to 443,203.60, 664,416.60 and 265,781.20

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Solution

The fourth proportional to 443,203.60, 664,416.60 and 265,781.20 is: 398,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,203.60 : 664,416.60 = 265,781.20 : x
  2. Step 2: Convert to fraction form
    443,203.60/664,416.60 = 265,781.20/x
  3. Step 3: Cross multiply
    443,203.60x = 664,416.60 × 265,781.20
  4. Step 4: Simplify right side
    443,203.60x = 176,589,441,247.92
  5. Step 5: Solve for x
    x = 176,589,441,247.92/443,203.60
  6. Step 6: Final answer
    x = 398,438.64

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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.