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Finding the Fourth Proportional to 355,365.78, 490,403.59 and 194,220.78

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Solution

The fourth proportional to 355,365.78, 490,403.59 and 194,220.78 is: 268,024.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,365.78 : 490,403.59 = 194,220.78 : x
  2. Step 2: Convert to fraction form
    355,365.78/490,403.59 = 194,220.78/x
  3. Step 3: Cross multiply
    355,365.78x = 490,403.59 × 194,220.78
  4. Step 4: Simplify right side
    355,365.78x = 95,246,567,764.60
  5. Step 5: Solve for x
    x = 95,246,567,764.60/355,365.78
  6. Step 6: Final answer
    x = 268,024.03

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1.5x scale

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.