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Finding the Fourth Proportional to 328,528.46, 492,796.64 and 128,942.84

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Solution

The fourth proportional to 328,528.46, 492,796.64 and 128,942.84 is: 193,415.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,528.46 : 492,796.64 = 128,942.84 : x
  2. Step 2: Convert to fraction form
    328,528.46/492,796.64 = 128,942.84/x
  3. Step 3: Cross multiply
    328,528.46x = 492,796.64 × 128,942.84
  4. Step 4: Simplify right side
    328,528.46x = 63,542,597,659.34
  5. Step 5: Solve for x
    x = 63,542,597,659.34/328,528.46
  6. Step 6: Final answer
    x = 193,415.81

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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.