Home / 421,621.20-632,213.10-155,244.60

Finding the Fourth Proportional to 421,621.20, 632,213.10 and 155,244.60

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Solution

The fourth proportional to 421,621.20, 632,213.10 and 155,244.60 is: 232,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,621.20 : 632,213.10 = 155,244.60 : x
  2. Step 2: Convert to fraction form
    421,621.20/632,213.10 = 155,244.60/x
  3. Step 3: Cross multiply
    421,621.20x = 632,213.10 × 155,244.60
  4. Step 4: Simplify right side
    421,621.20x = 98,147,669,824.26
  5. Step 5: Solve for x
    x = 98,147,669,824.26/421,621.20
  6. Step 6: Final answer
    x = 232,786.37

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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.