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Finding the Fourth Proportional to 666,457.53, 999,583.59 and 217,177.26

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Solution

The fourth proportional to 666,457.53, 999,583.59 and 217,177.26 is: 325,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,457.53 : 999,583.59 = 217,177.26 : x
  2. Step 2: Convert to fraction form
    666,457.53/999,583.59 = 217,177.26/x
  3. Step 3: Cross multiply
    666,457.53x = 999,583.59 × 217,177.26
  4. Step 4: Simplify right side
    666,457.53x = 217,086,825,217.16
  5. Step 5: Solve for x
    x = 217,086,825,217.16/666,457.53
  6. Step 6: Final answer
    x = 325,732.42

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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.