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Finding the Fourth Proportional to 381,984.40, 573,235.80 and 248,539.60

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Solution

The fourth proportional to 381,984.40, 573,235.80 and 248,539.60 is: 372,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,984.40 : 573,235.80 = 248,539.60 : x
  2. Step 2: Convert to fraction form
    381,984.40/573,235.80 = 248,539.60/x
  3. Step 3: Cross multiply
    381,984.40x = 573,235.80 × 248,539.60
  4. Step 4: Simplify right side
    381,984.40x = 142,471,796,437.68
  5. Step 5: Solve for x
    x = 142,471,796,437.68/381,984.40
  6. Step 6: Final answer
    x = 372,978.05

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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.