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Finding the Fourth Proportional to 201,485.20, 301,968.60 and 122,515.60

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Solution

The fourth proportional to 201,485.20, 301,968.60 and 122,515.60 is: 183,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,485.20 : 301,968.60 = 122,515.60 : x
  2. Step 2: Convert to fraction form
    201,485.20/301,968.60 = 122,515.60/x
  3. Step 3: Cross multiply
    201,485.20x = 301,968.60 × 122,515.60
  4. Step 4: Simplify right side
    201,485.20x = 36,995,864,210.16
  5. Step 5: Solve for x
    x = 36,995,864,210.16/201,485.20
  6. Step 6: Final answer
    x = 183,615.79

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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.