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Finding the Fourth Proportional to 328,199.55, 492,018.50 and 125,940.80

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Solution

The fourth proportional to 328,199.55, 492,018.50 and 125,940.80 is: 188,803.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,199.55 : 492,018.50 = 125,940.80 : x
  2. Step 2: Convert to fraction form
    328,199.55/492,018.50 = 125,940.80/x
  3. Step 3: Cross multiply
    328,199.55x = 492,018.50 × 125,940.80
  4. Step 4: Simplify right side
    328,199.55x = 61,965,200,415.00
  5. Step 5: Solve for x
    x = 61,965,200,415.00/328,199.55
  6. Step 6: Final answer
    x = 188,803.43

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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.