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Finding the Fourth Proportional to 423,491.60, 635,292.64 and 223,819.68

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Solution

The fourth proportional to 423,491.60, 635,292.64 and 223,819.68 is: 335,758.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,491.60 : 635,292.64 = 223,819.68 : x
  2. Step 2: Convert to fraction form
    423,491.60/635,292.64 = 223,819.68/x
  3. Step 3: Cross multiply
    423,491.60x = 635,292.64 × 223,819.68
  4. Step 4: Simplify right side
    423,491.60x = 142,190,995,391.16
  5. Step 5: Solve for x
    x = 142,190,995,391.16/423,491.60
  6. Step 6: Final answer
    x = 335,758.71

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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.