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Finding the Fourth Proportional to 363,873.20, 545,809.80 and 325,819.40

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Solution

The fourth proportional to 363,873.20, 545,809.80 and 325,819.40 is: 488,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,873.20 : 545,809.80 = 325,819.40 : x
  2. Step 2: Convert to fraction form
    363,873.20/545,809.80 = 325,819.40/x
  3. Step 3: Cross multiply
    363,873.20x = 545,809.80 × 325,819.40
  4. Step 4: Simplify right side
    363,873.20x = 177,835,421,550.12
  5. Step 5: Solve for x
    x = 177,835,421,550.12/363,873.20
  6. Step 6: Final answer
    x = 488,729.10

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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.