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Finding the Fourth Proportional to 223,467.68, 335,113.68 and 81,279.20

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Solution

The fourth proportional to 223,467.68, 335,113.68 and 81,279.20 is: 121,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,467.68 : 335,113.68 = 81,279.20 : x
  2. Step 2: Convert to fraction form
    223,467.68/335,113.68 = 81,279.20/x
  3. Step 3: Cross multiply
    223,467.68x = 335,113.68 × 81,279.20
  4. Step 4: Simplify right side
    223,467.68x = 27,237,771,819.46
  5. Step 5: Solve for x
    x = 27,237,771,819.46/223,467.68
  6. Step 6: Final answer
    x = 121,886.85

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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.