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Finding the Fourth Proportional to 363,953.14, 545,560.35 and 139,255.90

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Solution

The fourth proportional to 363,953.14, 545,560.35 and 139,255.90 is: 208,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,953.14 : 545,560.35 = 139,255.90 : x
  2. Step 2: Convert to fraction form
    363,953.14/545,560.35 = 139,255.90/x
  3. Step 3: Cross multiply
    363,953.14x = 545,560.35 × 139,255.90
  4. Step 4: Simplify right side
    363,953.14x = 75,972,497,543.57
  5. Step 5: Solve for x
    x = 75,972,497,543.57/363,953.14
  6. Step 6: Final answer
    x = 208,742.53

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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.