Home / 309,729,067.38-427,516,372.71-202,453,973.10

Finding the Fourth Proportional to 309,729,067.38, 427,516,372.71 and 202,453,973.10

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Solution

The fourth proportional to 309,729,067.38, 427,516,372.71 and 202,453,973.10 is: 279,445,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,729,067.38 : 427,516,372.71 = 202,453,973.10 : x
  2. Step 2: Convert to fraction form
    309,729,067.38/427,516,372.71 = 202,453,973.10/x
  3. Step 3: Cross multiply
    309,729,067.38x = 427,516,372.71 × 202,453,973.10
  4. Step 4: Simplify right side
    309,729,067.38x = 86,552,388,220,439,904
  5. Step 5: Solve for x
    x = 86,552,388,220,439,904/309,729,067.38
  6. Step 6: Final answer
    x = 279,445,481.02

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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.