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Finding the Fourth Proportional to 298,279.05, 447,419.49 and 73,639.51

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Solution

The fourth proportional to 298,279.05, 447,419.49 and 73,639.51 is: 110,459.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,279.05 : 447,419.49 = 73,639.51 : x
  2. Step 2: Convert to fraction form
    298,279.05/447,419.49 = 73,639.51/x
  3. Step 3: Cross multiply
    298,279.05x = 447,419.49 × 73,639.51
  4. Step 4: Simplify right side
    298,279.05x = 32,947,751,027.58
  5. Step 5: Solve for x
    x = 32,947,751,027.58/298,279.05
  6. Step 6: Final answer
    x = 110,459.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.