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Finding the Fourth Proportional to 266,195.20, 398,515.20 and 238,201.60

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Solution

The fourth proportional to 266,195.20, 398,515.20 and 238,201.60 is: 356,606.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,195.20 : 398,515.20 = 238,201.60 : x
  2. Step 2: Convert to fraction form
    266,195.20/398,515.20 = 238,201.60/x
  3. Step 3: Cross multiply
    266,195.20x = 398,515.20 × 238,201.60
  4. Step 4: Simplify right side
    266,195.20x = 94,926,958,264.32
  5. Step 5: Solve for x
    x = 94,926,958,264.32/266,195.20
  6. Step 6: Final answer
    x = 356,606.57

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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.