Home / 280,269,343.56-386,764,197.60-154,818,839.55

Finding the Fourth Proportional to 280,269,343.56, 386,764,197.60 and 154,818,839.55

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Solution

The fourth proportional to 280,269,343.56, 386,764,197.60 and 154,818,839.55 is: 213,645,857.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,269,343.56 : 386,764,197.60 = 154,818,839.55 : x
  2. Step 2: Convert to fraction form
    280,269,343.56/386,764,197.60 = 154,818,839.55/x
  3. Step 3: Cross multiply
    280,269,343.56x = 386,764,197.60 × 154,818,839.55
  4. Step 4: Simplify right side
    280,269,343.56x = 59,878,384,251,918,904
  5. Step 5: Solve for x
    x = 59,878,384,251,918,904/280,269,343.56
  6. Step 6: Final answer
    x = 213,645,857.56

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1.5x scale

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.