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Finding the Fourth Proportional to 262,666, 393,999 and 65,674

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Solution

The fourth proportional to 262,666, 393,999 and 65,674 is: 98,511

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,666 : 393,999 = 65,674 : x
  2. Step 2: Convert to fraction form
    262,666/393,999 = 65,674/x
  3. Step 3: Cross multiply
    262,666x = 393,999 × 65,674
  4. Step 4: Simplify right side
    262,666x = 25,875,490,326
  5. Step 5: Solve for x
    x = 25,875,490,326/262,666
  6. Step 6: Final answer
    x = 98,511

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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.