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Finding the Fourth Proportional to 222,665.40, 334,775.70 and 217,999.80

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Solution

The fourth proportional to 222,665.40, 334,775.70 and 217,999.80 is: 327,761.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,665.40 : 334,775.70 = 217,999.80 : x
  2. Step 2: Convert to fraction form
    222,665.40/334,775.70 = 217,999.80/x
  3. Step 3: Cross multiply
    222,665.40x = 334,775.70 × 217,999.80
  4. Step 4: Simplify right side
    222,665.40x = 72,981,035,644.86
  5. Step 5: Solve for x
    x = 72,981,035,644.86/222,665.40
  6. Step 6: Final answer
    x = 327,761.01

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1.5x scale

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.