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Finding the Fourth Proportional to 666,796.75, 1,000,283.01 and 217,360.15

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Solution

The fourth proportional to 666,796.75, 1,000,283.01 and 217,360.15 is: 326,068.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,796.75 : 1,000,283.01 = 217,360.15 : x
  2. Step 2: Convert to fraction form
    666,796.75/1,000,283.01 = 217,360.15/x
  3. Step 3: Cross multiply
    666,796.75x = 1,000,283.01 × 217,360.15
  4. Step 4: Simplify right side
    666,796.75x = 217,421,665,096.05
  5. Step 5: Solve for x
    x = 217,421,665,096.05/666,796.75
  6. Step 6: Final answer
    x = 326,068.87

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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.