Home / 262,921.20-393,928.20-122,391.60

Finding the Fourth Proportional to 262,921.20, 393,928.20 and 122,391.60

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Solution

The fourth proportional to 262,921.20, 393,928.20 and 122,391.60 is: 183,376.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,921.20 : 393,928.20 = 122,391.60 : x
  2. Step 2: Convert to fraction form
    262,921.20/393,928.20 = 122,391.60/x
  3. Step 3: Cross multiply
    262,921.20x = 393,928.20 × 122,391.60
  4. Step 4: Simplify right side
    262,921.20x = 48,213,502,683.12
  5. Step 5: Solve for x
    x = 48,213,502,683.12/262,921.20
  6. Step 6: Final answer
    x = 183,376.25

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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.