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Finding the Fourth Proportional to 408,112.80, 612,168.40 and 108,593.34

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Solution

The fourth proportional to 408,112.80, 612,168.40 and 108,593.34 is: 162,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,112.80 : 612,168.40 = 108,593.34 : x
  2. Step 2: Convert to fraction form
    408,112.80/612,168.40 = 108,593.34/x
  3. Step 3: Cross multiply
    408,112.80x = 612,168.40 × 108,593.34
  4. Step 4: Simplify right side
    408,112.80x = 66,477,411,198.46
  5. Step 5: Solve for x
    x = 66,477,411,198.46/408,112.80
  6. Step 6: Final answer
    x = 162,889.80

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1.5x scale

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.