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Finding the Fourth Proportional to 235,453.84, 324,922.79 and 128,022.93

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Solution

The fourth proportional to 235,453.84, 324,922.79 and 128,022.93 is: 176,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,453.84 : 324,922.79 = 128,022.93 : x
  2. Step 2: Convert to fraction form
    235,453.84/324,922.79 = 128,022.93/x
  3. Step 3: Cross multiply
    235,453.84x = 324,922.79 × 128,022.93
  4. Step 4: Simplify right side
    235,453.84x = 41,597,567,919.63
  5. Step 5: Solve for x
    x = 41,597,567,919.63/235,453.84
  6. Step 6: Final answer
    x = 176,669.74

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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.