Home / 280,181,928.80-420,272,893.20-178,397,199.20

Finding the Fourth Proportional to 280,181,928.80, 420,272,893.20 and 178,397,199.20

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Solution

The fourth proportional to 280,181,928.80, 420,272,893.20 and 178,397,199.20 is: 267,595,798.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,181,928.80 : 420,272,893.20 = 178,397,199.20 : x
  2. Step 2: Convert to fraction form
    280,181,928.80/420,272,893.20 = 178,397,199.20/x
  3. Step 3: Cross multiply
    280,181,928.80x = 420,272,893.20 × 178,397,199.20
  4. Step 4: Simplify right side
    280,181,928.80x = 74,975,507,046,560,720
  5. Step 5: Solve for x
    x = 74,975,507,046,560,720/280,181,928.80
  6. Step 6: Final answer
    x = 267,595,798.80

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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.