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Finding the Fourth Proportional to 266,607.55, 367,679.96 and 221,213.59

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Solution

The fourth proportional to 266,607.55, 367,679.96 and 221,213.59 is: 305,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,607.55 : 367,679.96 = 221,213.59 : x
  2. Step 2: Convert to fraction form
    266,607.55/367,679.96 = 221,213.59/x
  3. Step 3: Cross multiply
    266,607.55x = 367,679.96 × 221,213.59
  4. Step 4: Simplify right side
    266,607.55x = 81,335,802,084.26
  5. Step 5: Solve for x
    x = 81,335,802,084.26/266,607.55
  6. Step 6: Final answer
    x = 305,076.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.