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Finding the Fourth Proportional to 401,049.60, 553,241.44 and 271,944.40

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Solution

The fourth proportional to 401,049.60, 553,241.44 and 271,944.40 is: 375,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,049.60 : 553,241.44 = 271,944.40 : x
  2. Step 2: Convert to fraction form
    401,049.60/553,241.44 = 271,944.40/x
  3. Step 3: Cross multiply
    401,049.60x = 553,241.44 × 271,944.40
  4. Step 4: Simplify right side
    401,049.60x = 150,450,911,455.94
  5. Step 5: Solve for x
    x = 150,450,911,455.94/401,049.60
  6. Step 6: Final answer
    x = 375,142.90

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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.