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Finding the Fourth Proportional to 665,750.56, 998,667.88 and 281,427.76

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Solution

The fourth proportional to 665,750.56, 998,667.88 and 281,427.76 is: 422,159.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,750.56 : 998,667.88 = 281,427.76 : x
  2. Step 2: Convert to fraction form
    665,750.56/998,667.88 = 281,427.76/x
  3. Step 3: Cross multiply
    665,750.56x = 998,667.88 × 281,427.76
  4. Step 4: Simplify right side
    665,750.56x = 281,052,864,452.35
  5. Step 5: Solve for x
    x = 281,052,864,452.35/665,750.56
  6. Step 6: Final answer
    x = 422,159.41

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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.