Home / 280,629,765.54-387,271,582.31-155,190,449.41

Finding the Fourth Proportional to 280,629,765.54, 387,271,582.31 and 155,190,449.41

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Solution

The fourth proportional to 280,629,765.54, 387,271,582.31 and 155,190,449.41 is: 214,164,205.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629,765.54 : 387,271,582.31 = 155,190,449.41 : x
  2. Step 2: Convert to fraction form
    280,629,765.54/387,271,582.31 = 155,190,449.41/x
  3. Step 3: Cross multiply
    280,629,765.54x = 387,271,582.31 × 155,190,449.41
  4. Step 4: Simplify right side
    280,629,765.54x = 60,100,850,901,830,504
  5. Step 5: Solve for x
    x = 60,100,850,901,830,504/280,629,765.54
  6. Step 6: Final answer
    x = 214,164,205.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.