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Finding the Fourth Proportional to 298,066.78, 447,100.28 and 73,431.58

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Solution

The fourth proportional to 298,066.78, 447,100.28 and 73,431.58 is: 110,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,066.78 : 447,100.28 = 73,431.58 : x
  2. Step 2: Convert to fraction form
    298,066.78/447,100.28 = 73,431.58/x
  3. Step 3: Cross multiply
    298,066.78x = 447,100.28 × 73,431.58
  4. Step 4: Simplify right side
    298,066.78x = 32,831,279,978.84
  5. Step 5: Solve for x
    x = 32,831,279,978.84/298,066.78
  6. Step 6: Final answer
    x = 110,147.40

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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.