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Finding the Fourth Proportional to 355,356.60, 490,344.72 and 228,204.42

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Solution

The fourth proportional to 355,356.60, 490,344.72 and 228,204.42 is: 314,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,356.60 : 490,344.72 = 228,204.42 : x
  2. Step 2: Convert to fraction form
    355,356.60/490,344.72 = 228,204.42/x
  3. Step 3: Cross multiply
    355,356.60x = 490,344.72 × 228,204.42
  4. Step 4: Simplify right side
    355,356.60x = 111,898,832,427.66
  5. Step 5: Solve for x
    x = 111,898,832,427.66/355,356.60
  6. Step 6: Final answer
    x = 314,891.67

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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.