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Finding the Fourth Proportional to 355,365.90, 490,403.78 and 194,220.90

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Solution

The fourth proportional to 355,365.90, 490,403.78 and 194,220.90 is: 268,024.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,365.90 : 490,403.78 = 194,220.90 : x
  2. Step 2: Convert to fraction form
    355,365.90/490,403.78 = 194,220.90/x
  3. Step 3: Cross multiply
    355,365.90x = 490,403.78 × 194,220.90
  4. Step 4: Simplify right side
    355,365.90x = 95,246,663,515.00
  5. Step 5: Solve for x
    x = 95,246,663,515.00/355,365.90
  6. Step 6: Final answer
    x = 268,024.21

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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.