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Finding the Fourth Proportional to 202,615.40, 303,485.70 and 131,756.60

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Solution

The fourth proportional to 202,615.40, 303,485.70 and 131,756.60 is: 197,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,615.40 : 303,485.70 = 131,756.60 : x
  2. Step 2: Convert to fraction form
    202,615.40/303,485.70 = 131,756.60/x
  3. Step 3: Cross multiply
    202,615.40x = 303,485.70 × 131,756.60
  4. Step 4: Simplify right side
    202,615.40x = 39,986,243,980.62
  5. Step 5: Solve for x
    x = 39,986,243,980.62/202,615.40
  6. Step 6: Final answer
    x = 197,350.47

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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.