Home / 209,375,653.82-288,940,540.47-115,298,549.18

Finding the Fourth Proportional to 209,375,653.82, 288,940,540.47 and 115,298,549.18

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Solution

The fourth proportional to 209,375,653.82, 288,940,540.47 and 115,298,549.18 is: 159,113,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,375,653.82 : 288,940,540.47 = 115,298,549.18 : x
  2. Step 2: Convert to fraction form
    209,375,653.82/288,940,540.47 = 115,298,549.18/x
  3. Step 3: Cross multiply
    209,375,653.82x = 288,940,540.47 × 115,298,549.18
  4. Step 4: Simplify right side
    209,375,653.82x = 33,314,425,114,682,528
  5. Step 5: Solve for x
    x = 33,314,425,114,682,528/209,375,653.82
  6. Step 6: Final answer
    x = 159,113,175.33

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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.