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Finding the Fourth Proportional to 363,950.64, 545,556.60 and 139,253.40

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Solution

The fourth proportional to 363,950.64, 545,556.60 and 139,253.40 is: 208,738.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,950.64 : 545,556.60 = 139,253.40 : x
  2. Step 2: Convert to fraction form
    363,950.64/545,556.60 = 139,253.40/x
  3. Step 3: Cross multiply
    363,950.64x = 545,556.60 × 139,253.40
  4. Step 4: Simplify right side
    363,950.64x = 75,970,611,442.44
  5. Step 5: Solve for x
    x = 75,970,611,442.44/363,950.64
  6. Step 6: Final answer
    x = 208,738.78

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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.