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Finding the Fourth Proportional to 262,427.96, 393,704.40 and 84,934.97

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Solution

The fourth proportional to 262,427.96, 393,704.40 and 84,934.97 is: 127,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,427.96 : 393,704.40 = 84,934.97 : x
  2. Step 2: Convert to fraction form
    262,427.96/393,704.40 = 84,934.97/x
  3. Step 3: Cross multiply
    262,427.96x = 393,704.40 × 84,934.97
  4. Step 4: Simplify right side
    262,427.96x = 33,439,271,402.87
  5. Step 5: Solve for x
    x = 33,439,271,402.87/262,427.96
  6. Step 6: Final answer
    x = 127,422.67

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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.