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Finding the Fourth Proportional to 266,028, 399,117 and 108,369.60

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Solution

The fourth proportional to 266,028, 399,117 and 108,369.60 is: 162,584.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,028 : 399,117 = 108,369.60 : x
  2. Step 2: Convert to fraction form
    266,028/399,117 = 108,369.60/x
  3. Step 3: Cross multiply
    266,028x = 399,117 × 108,369.60
  4. Step 4: Simplify right side
    266,028x = 43,252,149,643.20
  5. Step 5: Solve for x
    x = 43,252,149,643.20/266,028
  6. Step 6: Final answer
    x = 162,584.95

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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.