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Finding the Fourth Proportional to 499,356.28, 689,159.10 and 273,035.80

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Solution

The fourth proportional to 499,356.28, 689,159.10 and 273,035.80 is: 376,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,356.28 : 689,159.10 = 273,035.80 : x
  2. Step 2: Convert to fraction form
    499,356.28/689,159.10 = 273,035.80/x
  3. Step 3: Cross multiply
    499,356.28x = 689,159.10 × 273,035.80
  4. Step 4: Simplify right side
    499,356.28x = 188,165,106,195.78
  5. Step 5: Solve for x
    x = 188,165,106,195.78/499,356.28
  6. Step 6: Final answer
    x = 376,815.34

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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.