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Finding the Fourth Proportional to 666,352.06, 999,527.30 and 217,072.20

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Solution

The fourth proportional to 666,352.06, 999,527.30 and 217,072.20 is: 325,608.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,352.06 : 999,527.30 = 217,072.20 : x
  2. Step 2: Convert to fraction form
    666,352.06/999,527.30 = 217,072.20/x
  3. Step 3: Cross multiply
    666,352.06x = 999,527.30 × 217,072.20
  4. Step 4: Simplify right side
    666,352.06x = 216,969,589,971.06
  5. Step 5: Solve for x
    x = 216,969,589,971.06/666,352.06
  6. Step 6: Final answer
    x = 325,608.04

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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.