Home / 290,034,878.31-400,253,238.81-157,879,673.37

Finding the Fourth Proportional to 290,034,878.31, 400,253,238.81 and 157,879,673.37

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Solution

The fourth proportional to 290,034,878.31, 400,253,238.81 and 157,879,673.37 is: 217,876,729.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,034,878.31 : 400,253,238.81 = 157,879,673.37 : x
  2. Step 2: Convert to fraction form
    290,034,878.31/400,253,238.81 = 157,879,673.37/x
  3. Step 3: Cross multiply
    290,034,878.31x = 400,253,238.81 × 157,879,673.37
  4. Step 4: Simplify right side
    290,034,878.31x = 63,191,850,608,607,408
  5. Step 5: Solve for x
    x = 63,191,850,608,607,408/290,034,878.31
  6. Step 6: Final answer
    x = 217,876,729.09

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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.