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Finding the Fourth Proportional to 355,375.35, 490,260.53 and 212,052.53

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Solution

The fourth proportional to 355,375.35, 490,260.53 and 212,052.53 is: 292,538.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,375.35 : 490,260.53 = 212,052.53 : x
  2. Step 2: Convert to fraction form
    355,375.35/490,260.53 = 212,052.53/x
  3. Step 3: Cross multiply
    355,375.35x = 490,260.53 × 212,052.53
  4. Step 4: Simplify right side
    355,375.35x = 103,960,987,501.42
  5. Step 5: Solve for x
    x = 103,960,987,501.42/355,375.35
  6. Step 6: Final answer
    x = 292,538.54

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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.