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Finding the Fourth Proportional to 207,072.80, 310,609.20 and 140,150.60

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Solution

The fourth proportional to 207,072.80, 310,609.20 and 140,150.60 is: 210,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,072.80 : 310,609.20 = 140,150.60 : x
  2. Step 2: Convert to fraction form
    207,072.80/310,609.20 = 140,150.60/x
  3. Step 3: Cross multiply
    207,072.80x = 310,609.20 × 140,150.60
  4. Step 4: Simplify right side
    207,072.80x = 43,532,065,745.52
  5. Step 5: Solve for x
    x = 43,532,065,745.52/207,072.80
  6. Step 6: Final answer
    x = 210,225.90

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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.