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Finding the Fourth Proportional to 388,069.60, 582,104.40 and 263,653.60

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Solution

The fourth proportional to 388,069.60, 582,104.40 and 263,653.60 is: 395,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,069.60 : 582,104.40 = 263,653.60 : x
  2. Step 2: Convert to fraction form
    388,069.60/582,104.40 = 263,653.60/x
  3. Step 3: Cross multiply
    388,069.60x = 582,104.40 × 263,653.60
  4. Step 4: Simplify right side
    388,069.60x = 153,473,920,635.84
  5. Step 5: Solve for x
    x = 153,473,920,635.84/388,069.60
  6. Step 6: Final answer
    x = 395,480.40

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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.