Home / 209,428.43-311,773.95-208,182.87

Finding the Fourth Proportional to 209,428.43, 311,773.95 and 208,182.87

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Solution

The fourth proportional to 209,428.43, 311,773.95 and 208,182.87 is: 309,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,428.43 : 311,773.95 = 208,182.87 : x
  2. Step 2: Convert to fraction form
    209,428.43/311,773.95 = 208,182.87/x
  3. Step 3: Cross multiply
    209,428.43x = 311,773.95 × 208,182.87
  4. Step 4: Simplify right side
    209,428.43x = 64,905,995,702.24
  5. Step 5: Solve for x
    x = 64,905,995,702.24/209,428.43
  6. Step 6: Final answer
    x = 309,919.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.