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Finding the Fourth Proportional to 353,278.38, 529,920.78 and 100,558.77

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Solution

The fourth proportional to 353,278.38, 529,920.78 and 100,558.77 is: 150,839.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,278.38 : 529,920.78 = 100,558.77 : x
  2. Step 2: Convert to fraction form
    353,278.38/529,920.78 = 100,558.77/x
  3. Step 3: Cross multiply
    353,278.38x = 529,920.78 × 100,558.77
  4. Step 4: Simplify right side
    353,278.38x = 53,288,183,070.82
  5. Step 5: Solve for x
    x = 53,288,183,070.82/353,278.38
  6. Step 6: Final answer
    x = 150,839.07

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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.