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Finding the Fourth Proportional to 499,977.70, 689,963.61 and 273,620.50

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Solution

The fourth proportional to 499,977.70, 689,963.61 and 273,620.50 is: 377,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,977.70 : 689,963.61 = 273,620.50 : x
  2. Step 2: Convert to fraction form
    499,977.70/689,963.61 = 273,620.50/x
  3. Step 3: Cross multiply
    499,977.70x = 689,963.61 × 273,620.50
  4. Step 4: Simplify right side
    499,977.70x = 188,788,187,950.01
  5. Step 5: Solve for x
    x = 188,788,187,950.01/499,977.70
  6. Step 6: Final answer
    x = 377,593.22

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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.