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Finding the Fourth Proportional to 359,516.40, 496,128.96 and 198,374.64

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Solution

The fourth proportional to 359,516.40, 496,128.96 and 198,374.64 is: 273,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,516.40 : 496,128.96 = 198,374.64 : x
  2. Step 2: Convert to fraction form
    359,516.40/496,128.96 = 198,374.64/x
  3. Step 3: Cross multiply
    359,516.40x = 496,128.96 × 198,374.64
  4. Step 4: Simplify right side
    359,516.40x = 98,419,403,833.57
  5. Step 5: Solve for x
    x = 98,419,403,833.57/359,516.40
  6. Step 6: Final answer
    x = 273,754.98

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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.