Home / 207,621.20-311,237.40-162,617.60

Finding the Fourth Proportional to 207,621.20, 311,237.40 and 162,617.60

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Solution

The fourth proportional to 207,621.20, 311,237.40 and 162,617.60 is: 243,774.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,621.20 : 311,237.40 = 162,617.60 : x
  2. Step 2: Convert to fraction form
    207,621.20/311,237.40 = 162,617.60/x
  3. Step 3: Cross multiply
    207,621.20x = 311,237.40 × 162,617.60
  4. Step 4: Simplify right side
    207,621.20x = 50,612,679,018.24
  5. Step 5: Solve for x
    x = 50,612,679,018.24/207,621.20
  6. Step 6: Final answer
    x = 243,774.14

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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.