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Finding the Fourth Proportional to 666,454.08, 999,578.45 and 217,173.81

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Solution

The fourth proportional to 666,454.08, 999,578.45 and 217,173.81 is: 325,727.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,454.08 : 999,578.45 = 217,173.81 : x
  2. Step 2: Convert to fraction form
    666,454.08/999,578.45 = 217,173.81/x
  3. Step 3: Cross multiply
    666,454.08x = 999,578.45 × 217,173.81
  4. Step 4: Simplify right side
    666,454.08x = 217,082,260,380.40
  5. Step 5: Solve for x
    x = 217,082,260,380.40/666,454.08
  6. Step 6: Final answer
    x = 325,727.26

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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.