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Finding the Fourth Proportional to 266,425.40, 399,638.10 and 166,892.60

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Solution

The fourth proportional to 266,425.40, 399,638.10 and 166,892.60 is: 250,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,425.40 : 399,638.10 = 166,892.60 : x
  2. Step 2: Convert to fraction form
    266,425.40/399,638.10 = 166,892.60/x
  3. Step 3: Cross multiply
    266,425.40x = 399,638.10 × 166,892.60
  4. Step 4: Simplify right side
    266,425.40x = 66,696,641,568.06
  5. Step 5: Solve for x
    x = 66,696,641,568.06/266,425.40
  6. Step 6: Final answer
    x = 250,338.90

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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.