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Finding the Fourth Proportional to 355,104.47, 490,220.92 and 219,213.33

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Solution

The fourth proportional to 355,104.47, 490,220.92 and 219,213.33 is: 302,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,104.47 : 490,220.92 = 219,213.33 : x
  2. Step 2: Convert to fraction form
    355,104.47/490,220.92 = 219,213.33/x
  3. Step 3: Cross multiply
    355,104.47x = 490,220.92 × 219,213.33
  4. Step 4: Simplify right side
    355,104.47x = 107,462,958,744.55
  5. Step 5: Solve for x
    x = 107,462,958,744.55/355,104.47
  6. Step 6: Final answer
    x = 302,623.50

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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.