Home / 207,895.40-311,843.10-205,130.60

Finding the Fourth Proportional to 207,895.40, 311,843.10 and 205,130.60

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Solution

The fourth proportional to 207,895.40, 311,843.10 and 205,130.60 is: 307,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,895.40 : 311,843.10 = 205,130.60 : x
  2. Step 2: Convert to fraction form
    207,895.40/311,843.10 = 205,130.60/x
  3. Step 3: Cross multiply
    207,895.40x = 311,843.10 × 205,130.60
  4. Step 4: Simplify right side
    207,895.40x = 63,968,562,208.86
  5. Step 5: Solve for x
    x = 63,968,562,208.86/207,895.40
  6. Step 6: Final answer
    x = 307,695.90

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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.