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Finding the Fourth Proportional to 353,722.68, 488,179.62 and 208,561.32

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Solution

The fourth proportional to 353,722.68, 488,179.62 and 208,561.32 is: 287,839.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,722.68 : 488,179.62 = 208,561.32 : x
  2. Step 2: Convert to fraction form
    353,722.68/488,179.62 = 208,561.32/x
  3. Step 3: Cross multiply
    353,722.68x = 488,179.62 × 208,561.32
  4. Step 4: Simplify right side
    353,722.68x = 101,815,385,944.30
  5. Step 5: Solve for x
    x = 101,815,385,944.30/353,722.68
  6. Step 6: Final answer
    x = 287,839.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.