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Finding the Fourth Proportional to 359,816.80, 538,861.20 and 193,237.60

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Solution

The fourth proportional to 359,816.80, 538,861.20 and 193,237.60 is: 289,392.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,816.80 : 538,861.20 = 193,237.60 : x
  2. Step 2: Convert to fraction form
    359,816.80/538,861.20 = 193,237.60/x
  3. Step 3: Cross multiply
    359,816.80x = 538,861.20 × 193,237.60
  4. Step 4: Simplify right side
    359,816.80x = 104,128,245,021.12
  5. Step 5: Solve for x
    x = 104,128,245,021.12/359,816.80
  6. Step 6: Final answer
    x = 289,392.39

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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.