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Finding the Fourth Proportional to 203,571.72, 304,926.66 and 128,653.56

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Solution

The fourth proportional to 203,571.72, 304,926.66 and 128,653.56 is: 192,708.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,571.72 : 304,926.66 = 128,653.56 : x
  2. Step 2: Convert to fraction form
    203,571.72/304,926.66 = 128,653.56/x
  3. Step 3: Cross multiply
    203,571.72x = 304,926.66 × 128,653.56
  4. Step 4: Simplify right side
    203,571.72x = 39,229,900,347.91
  5. Step 5: Solve for x
    x = 39,229,900,347.91/203,571.72
  6. Step 6: Final answer
    x = 192,708.01

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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.