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Finding the Fourth Proportional to 207,907.10, 311,399.85 and 161,007.90

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Solution

The fourth proportional to 207,907.10, 311,399.85 and 161,007.90 is: 241,155.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,907.10 : 311,399.85 = 161,007.90 : x
  2. Step 2: Convert to fraction form
    207,907.10/311,399.85 = 161,007.90/x
  3. Step 3: Cross multiply
    207,907.10x = 311,399.85 × 161,007.90
  4. Step 4: Simplify right side
    207,907.10x = 50,137,835,908.82
  5. Step 5: Solve for x
    x = 50,137,835,908.82/207,907.10
  6. Step 6: Final answer
    x = 241,155.00

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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.