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Finding the Fourth Proportional to 266,777.70, 399,194.55 and 166,985.70

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Solution

The fourth proportional to 266,777.70, 399,194.55 and 166,985.70 is: 249,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,777.70 : 399,194.55 = 166,985.70 : x
  2. Step 2: Convert to fraction form
    266,777.70/399,194.55 = 166,985.70/x
  3. Step 3: Cross multiply
    266,777.70x = 399,194.55 × 166,985.70
  4. Step 4: Simplify right side
    266,777.70x = 66,659,781,367.94
  5. Step 5: Solve for x
    x = 66,659,781,367.94/266,777.70
  6. Step 6: Final answer
    x = 249,870.14

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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.