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Finding the Fourth Proportional to 355,355.59, 490,343.34 and 228,203.41

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Solution

The fourth proportional to 355,355.59, 490,343.34 and 228,203.41 is: 314,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,355.59 : 490,343.34 = 228,203.41 : x
  2. Step 2: Convert to fraction form
    355,355.59/490,343.34 = 228,203.41/x
  3. Step 3: Cross multiply
    355,355.59x = 490,343.34 × 228,203.41
  4. Step 4: Simplify right side
    355,355.59x = 111,898,022,258.79
  5. Step 5: Solve for x
    x = 111,898,022,258.79/355,355.59
  6. Step 6: Final answer
    x = 314,890.28

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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.