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Finding the Fourth Proportional to 266,054.20, 399,081.30 and 166,845.40

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Solution

The fourth proportional to 266,054.20, 399,081.30 and 166,845.40 is: 250,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,054.20 : 399,081.30 = 166,845.40 : x
  2. Step 2: Convert to fraction form
    266,054.20/399,081.30 = 166,845.40/x
  3. Step 3: Cross multiply
    266,054.20x = 399,081.30 × 166,845.40
  4. Step 4: Simplify right side
    266,054.20x = 66,584,879,131.02
  5. Step 5: Solve for x
    x = 66,584,879,131.02/266,054.20
  6. Step 6: Final answer
    x = 250,268.10

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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.