Home / 209,904.20-314,856.30-207,935.90

Finding the Fourth Proportional to 209,904.20, 314,856.30 and 207,935.90

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Solution

The fourth proportional to 209,904.20, 314,856.30 and 207,935.90 is: 311,903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,904.20 : 314,856.30 = 207,935.90 : x
  2. Step 2: Convert to fraction form
    209,904.20/314,856.30 = 207,935.90/x
  3. Step 3: Cross multiply
    209,904.20x = 314,856.30 × 207,935.90
  4. Step 4: Simplify right side
    209,904.20x = 65,469,928,111.17
  5. Step 5: Solve for x
    x = 65,469,928,111.17/209,904.20
  6. Step 6: Final answer
    x = 311,903.85

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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.