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Finding the Fourth Proportional to 499,805.13, 689,748.30 and 273,450.63

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Solution

The fourth proportional to 499,805.13, 689,748.30 and 273,450.63 is: 377,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,805.13 : 689,748.30 = 273,450.63 : x
  2. Step 2: Convert to fraction form
    499,805.13/689,748.30 = 273,450.63/x
  3. Step 3: Cross multiply
    499,805.13x = 689,748.30 × 273,450.63
  4. Step 4: Simplify right side
    499,805.13x = 188,612,107,176.43
  5. Step 5: Solve for x
    x = 188,612,107,176.43/499,805.13
  6. Step 6: Final answer
    x = 377,371.29

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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.