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Finding the Fourth Proportional to 355,819.44, 490,950.54 and 212,551.50

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Solution

The fourth proportional to 355,819.44, 490,950.54 and 212,551.50 is: 293,273.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,819.44 : 490,950.54 = 212,551.50 : x
  2. Step 2: Convert to fraction form
    355,819.44/490,950.54 = 212,551.50/x
  3. Step 3: Cross multiply
    355,819.44x = 490,950.54 × 212,551.50
  4. Step 4: Simplify right side
    355,819.44x = 104,352,273,702.81
  5. Step 5: Solve for x
    x = 104,352,273,702.81/355,819.44
  6. Step 6: Final answer
    x = 293,273.11

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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.