Home / 272,021.40-408,166.20-122,367.60

Finding the Fourth Proportional to 272,021.40, 408,166.20 and 122,367.60

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Solution

The fourth proportional to 272,021.40, 408,166.20 and 122,367.60 is: 183,611.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,021.40 : 408,166.20 = 122,367.60 : x
  2. Step 2: Convert to fraction form
    272,021.40/408,166.20 = 122,367.60/x
  3. Step 3: Cross multiply
    272,021.40x = 408,166.20 × 122,367.60
  4. Step 4: Simplify right side
    272,021.40x = 49,946,318,295.12
  5. Step 5: Solve for x
    x = 49,946,318,295.12/272,021.40
  6. Step 6: Final answer
    x = 183,611.72

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1.5x scale

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.