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Finding the Fourth Proportional to 262,664, 393,996 and 65,672

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Solution

The fourth proportional to 262,664, 393,996 and 65,672 is: 98,508

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,664 : 393,996 = 65,672 : x
  2. Step 2: Convert to fraction form
    262,664/393,996 = 65,672/x
  3. Step 3: Cross multiply
    262,664x = 393,996 × 65,672
  4. Step 4: Simplify right side
    262,664x = 25,874,505,312
  5. Step 5: Solve for x
    x = 25,874,505,312/262,664
  6. Step 6: Final answer
    x = 98,508

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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.