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Finding the Fourth Proportional to 339,975.20, 509,271.60 and 173,856.80

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Solution

The fourth proportional to 339,975.20, 509,271.60 and 173,856.80 is: 260,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,975.20 : 509,271.60 = 173,856.80 : x
  2. Step 2: Convert to fraction form
    339,975.20/509,271.60 = 173,856.80/x
  3. Step 3: Cross multiply
    339,975.20x = 509,271.60 × 173,856.80
  4. Step 4: Simplify right side
    339,975.20x = 88,540,330,706.88
  5. Step 5: Solve for x
    x = 88,540,330,706.88/339,975.20
  6. Step 6: Final answer
    x = 260,431.73

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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.