Home / 280,181,927.80-420,272,891.70-178,397,198.20

Finding the Fourth Proportional to 280,181,927.80, 420,272,891.70 and 178,397,198.20

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Solution

The fourth proportional to 280,181,927.80, 420,272,891.70 and 178,397,198.20 is: 267,595,797.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,181,927.80 : 420,272,891.70 = 178,397,198.20 : x
  2. Step 2: Convert to fraction form
    280,181,927.80/420,272,891.70 = 178,397,198.20/x
  3. Step 3: Cross multiply
    280,181,927.80x = 420,272,891.70 × 178,397,198.20
  4. Step 4: Simplify right side
    280,181,927.80x = 74,975,506,358,692,032
  5. Step 5: Solve for x
    x = 74,975,506,358,692,032/280,181,927.80
  6. Step 6: Final answer
    x = 267,595,797.30

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1.5x scale

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.