Home / 312,488,554.92-431,036,568.42-200,787,418.14

Finding the Fourth Proportional to 312,488,554.92, 431,036,568.42 and 200,787,418.14

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Solution

The fourth proportional to 312,488,554.92, 431,036,568.42 and 200,787,418.14 is: 276,959,646.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,488,554.92 : 431,036,568.42 = 200,787,418.14 : x
  2. Step 2: Convert to fraction form
    312,488,554.92/431,036,568.42 = 200,787,418.14/x
  3. Step 3: Cross multiply
    312,488,554.92x = 431,036,568.42 × 200,787,418.14
  4. Step 4: Simplify right side
    312,488,554.92x = 86,546,719,696,977,264
  5. Step 5: Solve for x
    x = 86,546,719,696,977,264/312,488,554.92
  6. Step 6: Final answer
    x = 276,959,646.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.