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Finding the Fourth Proportional to 339,954.72, 509,990.40 and 182,140.80

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Solution

The fourth proportional to 339,954.72, 509,990.40 and 182,140.80 is: 273,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,954.72 : 509,990.40 = 182,140.80 : x
  2. Step 2: Convert to fraction form
    339,954.72/509,990.40 = 182,140.80/x
  3. Step 3: Cross multiply
    339,954.72x = 509,990.40 × 182,140.80
  4. Step 4: Simplify right side
    339,954.72x = 92,890,059,448.32
  5. Step 5: Solve for x
    x = 92,890,059,448.32/339,954.72
  6. Step 6: Final answer
    x = 273,242.45

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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.