Home / 209,375,665.60-288,940,556.68-115,298,560.96

Finding the Fourth Proportional to 209,375,665.60, 288,940,556.68 and 115,298,560.96

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Solution

The fourth proportional to 209,375,665.60, 288,940,556.68 and 115,298,560.96 is: 159,113,191.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,375,665.60 : 288,940,556.68 = 115,298,560.96 : x
  2. Step 2: Convert to fraction form
    209,375,665.60/288,940,556.68 = 115,298,560.96/x
  3. Step 3: Cross multiply
    209,375,665.60x = 288,940,556.68 × 115,298,560.96
  4. Step 4: Simplify right side
    209,375,665.60x = 33,314,430,388,185,316
  5. Step 5: Solve for x
    x = 33,314,430,388,185,316/209,375,665.60
  6. Step 6: Final answer
    x = 159,113,191.56

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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.