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Finding the Fourth Proportional to 499,549.87, 689,377.34 and 270,105.53

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Solution

The fourth proportional to 499,549.87, 689,377.34 and 270,105.53 is: 372,744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,549.87 : 689,377.34 = 270,105.53 : x
  2. Step 2: Convert to fraction form
    499,549.87/689,377.34 = 270,105.53/x
  3. Step 3: Cross multiply
    499,549.87x = 689,377.34 × 270,105.53
  4. Step 4: Simplify right side
    499,549.87x = 186,204,629,019.07
  5. Step 5: Solve for x
    x = 186,204,629,019.07/499,549.87
  6. Step 6: Final answer
    x = 372,744.82

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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.