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Finding the Fourth Proportional to 262,429.98, 393,707.43 and 84,936.97

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Solution

The fourth proportional to 262,429.98, 393,707.43 and 84,936.97 is: 127,425.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,429.98 : 393,707.43 = 84,936.97 : x
  2. Step 2: Convert to fraction form
    262,429.98/393,707.43 = 84,936.97/x
  3. Step 3: Cross multiply
    262,429.98x = 393,707.43 × 84,936.97
  4. Step 4: Simplify right side
    262,429.98x = 33,440,316,170.69
  5. Step 5: Solve for x
    x = 33,440,316,170.69/262,429.98
  6. Step 6: Final answer
    x = 127,425.67

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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.