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Finding the Fourth Proportional to 408,323.45, 612,483.08 and 104,716.22

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Solution

The fourth proportional to 408,323.45, 612,483.08 and 104,716.22 is: 157,073.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,323.45 : 612,483.08 = 104,716.22 : x
  2. Step 2: Convert to fraction form
    408,323.45/612,483.08 = 104,716.22/x
  3. Step 3: Cross multiply
    408,323.45x = 612,483.08 × 104,716.22
  4. Step 4: Simplify right side
    408,323.45x = 64,136,909,365.56
  5. Step 5: Solve for x
    x = 64,136,909,365.56/408,323.45
  6. Step 6: Final answer
    x = 157,073.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.