Home / 356,131.05-491,507.79-203,134.20

Finding the Fourth Proportional to 356,131.05, 491,507.79 and 203,134.20

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Solution

The fourth proportional to 356,131.05, 491,507.79 and 203,134.20 is: 280,351.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,131.05 : 491,507.79 = 203,134.20 : x
  2. Step 2: Convert to fraction form
    356,131.05/491,507.79 = 203,134.20/x
  3. Step 3: Cross multiply
    356,131.05x = 491,507.79 × 203,134.20
  4. Step 4: Simplify right side
    356,131.05x = 99,842,041,715.42
  5. Step 5: Solve for x
    x = 99,842,041,715.42/356,131.05
  6. Step 6: Final answer
    x = 280,351.97

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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.