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Finding the Fourth Proportional to 499,859.76, 689,805.72 and 273,505.20

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Solution

The fourth proportional to 499,859.76, 689,805.72 and 273,505.20 is: 377,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,859.76 : 689,805.72 = 273,505.20 : x
  2. Step 2: Convert to fraction form
    499,859.76/689,805.72 = 273,505.20/x
  3. Step 3: Cross multiply
    499,859.76x = 689,805.72 × 273,505.20
  4. Step 4: Simplify right side
    499,859.76x = 188,665,451,409.74
  5. Step 5: Solve for x
    x = 188,665,451,409.74/499,859.76
  6. Step 6: Final answer
    x = 377,436.77

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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.