Home / 427,468,156.68-641,616,868.08-206,295,145.38

Finding the Fourth Proportional to 427,468,156.68, 641,616,868.08 and 206,295,145.38

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Solution

The fourth proportional to 427,468,156.68, 641,616,868.08 and 206,295,145.38 is: 309,642,819.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,468,156.68 : 641,616,868.08 = 206,295,145.38 : x
  2. Step 2: Convert to fraction form
    427,468,156.68/641,616,868.08 = 206,295,145.38/x
  3. Step 3: Cross multiply
    427,468,156.68x = 641,616,868.08 × 206,295,145.38
  4. Step 4: Simplify right side
    427,468,156.68x = 132,362,445,078,823,888
  5. Step 5: Solve for x
    x = 132,362,445,078,823,888/427,468,156.68
  6. Step 6: Final answer
    x = 309,642,819.03

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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.