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Finding the Fourth Proportional to 499,474.08, 689,290.74 and 273,119.58

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Solution

The fourth proportional to 499,474.08, 689,290.74 and 273,119.58 is: 376,914.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,474.08 : 689,290.74 = 273,119.58 : x
  2. Step 2: Convert to fraction form
    499,474.08/689,290.74 = 273,119.58/x
  3. Step 3: Cross multiply
    499,474.08x = 689,290.74 × 273,119.58
  4. Step 4: Simplify right side
    499,474.08x = 188,258,797,406.69
  5. Step 5: Solve for x
    x = 188,258,797,406.69/499,474.08
  6. Step 6: Final answer
    x = 376,914.05

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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.