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Finding the Fourth Proportional to 298,227.80, 411,486.80 and 217,699.22

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Solution

The fourth proportional to 298,227.80, 411,486.80 and 217,699.22 is: 300,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,227.80 : 411,486.80 = 217,699.22 : x
  2. Step 2: Convert to fraction form
    298,227.80/411,486.80 = 217,699.22/x
  3. Step 3: Cross multiply
    298,227.80x = 411,486.80 × 217,699.22
  4. Step 4: Simplify right side
    298,227.80x = 89,580,355,400.30
  5. Step 5: Solve for x
    x = 89,580,355,400.30/298,227.80
  6. Step 6: Final answer
    x = 300,375.60

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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.