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Finding the Fourth Proportional to 392,912.93, 589,365.08 and 235,185.41

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Solution

The fourth proportional to 392,912.93, 589,365.08 and 235,185.41 is: 352,775.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,912.93 : 589,365.08 = 235,185.41 : x
  2. Step 2: Convert to fraction form
    392,912.93/589,365.08 = 235,185.41/x
  3. Step 3: Cross multiply
    392,912.93x = 589,365.08 × 235,185.41
  4. Step 4: Simplify right side
    392,912.93x = 138,610,066,803.56
  5. Step 5: Solve for x
    x = 138,610,066,803.56/392,912.93
  6. Step 6: Final answer
    x = 352,775.53

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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.