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Finding the Fourth Proportional to 289,859.20, 434,251.20 and 164,828.80

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Solution

The fourth proportional to 289,859.20, 434,251.20 and 164,828.80 is: 246,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,859.20 : 434,251.20 = 164,828.80 : x
  2. Step 2: Convert to fraction form
    289,859.20/434,251.20 = 164,828.80/x
  3. Step 3: Cross multiply
    289,859.20x = 434,251.20 × 164,828.80
  4. Step 4: Simplify right side
    289,859.20x = 71,577,104,194.56
  5. Step 5: Solve for x
    x = 71,577,104,194.56/289,859.20
  6. Step 6: Final answer
    x = 246,937.49

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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.