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Finding the Fourth Proportional to 339,860.50, 509,790.74 and 161,827.78

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Solution

The fourth proportional to 339,860.50, 509,790.74 and 161,827.78 is: 242,741.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,860.50 : 509,790.74 = 161,827.78 : x
  2. Step 2: Convert to fraction form
    339,860.50/509,790.74 = 161,827.78/x
  3. Step 3: Cross multiply
    339,860.50x = 509,790.74 × 161,827.78
  4. Step 4: Simplify right side
    339,860.50x = 82,498,303,718.76
  5. Step 5: Solve for x
    x = 82,498,303,718.76/339,860.50
  6. Step 6: Final answer
    x = 242,741.67

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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.