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Finding the Fourth Proportional to 289,967.43, 434,772.48 and 100,383.69

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Solution

The fourth proportional to 289,967.43, 434,772.48 and 100,383.69 is: 150,513.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,967.43 : 434,772.48 = 100,383.69 : x
  2. Step 2: Convert to fraction form
    289,967.43/434,772.48 = 100,383.69/x
  3. Step 3: Cross multiply
    289,967.43x = 434,772.48 × 100,383.69
  4. Step 4: Simplify right side
    289,967.43x = 43,644,065,852.85
  5. Step 5: Solve for x
    x = 43,644,065,852.85/289,967.43
  6. Step 6: Final answer
    x = 150,513.68

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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.