Home / 308,619.20-462,928.80-189,905.60

Finding the Fourth Proportional to 308,619.20, 462,928.80 and 189,905.60

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Solution

The fourth proportional to 308,619.20, 462,928.80 and 189,905.60 is: 284,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,619.20 : 462,928.80 = 189,905.60 : x
  2. Step 2: Convert to fraction form
    308,619.20/462,928.80 = 189,905.60/x
  3. Step 3: Cross multiply
    308,619.20x = 462,928.80 × 189,905.60
  4. Step 4: Simplify right side
    308,619.20x = 87,912,771,521.28
  5. Step 5: Solve for x
    x = 87,912,771,521.28/308,619.20
  6. Step 6: Final answer
    x = 284,858.40

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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.