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Finding the Fourth Proportional to 266,015, 399,097.50 and 108,356.60

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Solution

The fourth proportional to 266,015, 399,097.50 and 108,356.60 is: 162,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,015 : 399,097.50 = 108,356.60 : x
  2. Step 2: Convert to fraction form
    266,015/399,097.50 = 108,356.60/x
  3. Step 3: Cross multiply
    266,015x = 399,097.50 × 108,356.60
  4. Step 4: Simplify right side
    266,015x = 43,244,848,168.50
  5. Step 5: Solve for x
    x = 43,244,848,168.50/266,015
  6. Step 6: Final answer
    x = 162,565.45

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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.