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Finding the Fourth Proportional to 235,446.50, 324,912.34 and 128,019.23

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Solution

The fourth proportional to 235,446.50, 324,912.34 and 128,019.23 is: 176,664.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,446.50 : 324,912.34 = 128,019.23 : x
  2. Step 2: Convert to fraction form
    235,446.50/324,912.34 = 128,019.23/x
  3. Step 3: Cross multiply
    235,446.50x = 324,912.34 × 128,019.23
  4. Step 4: Simplify right side
    235,446.50x = 41,595,028,805.76
  5. Step 5: Solve for x
    x = 41,595,028,805.76/235,446.50
  6. Step 6: Final answer
    x = 176,664.46

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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.