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Finding the Fourth Proportional to 279,938,352.60, 419,907,528.90 and 118,380,288.60

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Solution

The fourth proportional to 279,938,352.60, 419,907,528.90 and 118,380,288.60 is: 177,570,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,352.60 : 419,907,528.90 = 118,380,288.60 : x
  2. Step 2: Convert to fraction form
    279,938,352.60/419,907,528.90 = 118,380,288.60/x
  3. Step 3: Cross multiply
    279,938,352.60x = 419,907,528.90 × 118,380,288.60
  4. Step 4: Simplify right side
    279,938,352.60x = 49,708,774,456,494,832
  5. Step 5: Solve for x
    x = 49,708,774,456,494,832/279,938,352.60
  6. Step 6: Final answer
    x = 177,570,432.90

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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.