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Finding the Fourth Proportional to 339,376.05, 509,174.80 and 161,860.01

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Solution

The fourth proportional to 339,376.05, 509,174.80 and 161,860.01 is: 242,842.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,376.05 : 509,174.80 = 161,860.01 : x
  2. Step 2: Convert to fraction form
    339,376.05/509,174.80 = 161,860.01/x
  3. Step 3: Cross multiply
    339,376.05x = 509,174.80 × 161,860.01
  4. Step 4: Simplify right side
    339,376.05x = 82,415,035,269.22
  5. Step 5: Solve for x
    x = 82,415,035,269.22/339,376.05
  6. Step 6: Final answer
    x = 242,842.81

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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.