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Finding the Fourth Proportional to 443,267.64, 664,959 and 203,323.68

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Solution

The fourth proportional to 443,267.64, 664,959 and 203,323.68 is: 305,011.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,267.64 : 664,959 = 203,323.68 : x
  2. Step 2: Convert to fraction form
    443,267.64/664,959 = 203,323.68/x
  3. Step 3: Cross multiply
    443,267.64x = 664,959 × 203,323.68
  4. Step 4: Simplify right side
    443,267.64x = 135,201,910,929.12
  5. Step 5: Solve for x
    x = 135,201,910,929.12/443,267.64
  6. Step 6: Final answer
    x = 305,011.91

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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.