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Finding the Fourth Proportional to 328,197.80, 492,015.88 and 125,939.04

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Solution

The fourth proportional to 328,197.80, 492,015.88 and 125,939.04 is: 188,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,197.80 : 492,015.88 = 125,939.04 : x
  2. Step 2: Convert to fraction form
    328,197.80/492,015.88 = 125,939.04/x
  3. Step 3: Cross multiply
    328,197.80x = 492,015.88 × 125,939.04
  4. Step 4: Simplify right side
    328,197.80x = 61,964,006,962.26
  5. Step 5: Solve for x
    x = 61,964,006,962.26/328,197.80
  6. Step 6: Final answer
    x = 188,800.80

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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.