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Finding the Fourth Proportional to 305,940.80, 458,619.60 and 238,435.40

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Solution

The fourth proportional to 305,940.80, 458,619.60 and 238,435.40 is: 357,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,940.80 : 458,619.60 = 238,435.40 : x
  2. Step 2: Convert to fraction form
    305,940.80/458,619.60 = 238,435.40/x
  3. Step 3: Cross multiply
    305,940.80x = 458,619.60 × 238,435.40
  4. Step 4: Simplify right side
    305,940.80x = 109,351,147,773.84
  5. Step 5: Solve for x
    x = 109,351,147,773.84/305,940.80
  6. Step 6: Final answer
    x = 357,425.84

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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.