Home / 209,278,992.35-288,802,717.56-115,191,127.67

Finding the Fourth Proportional to 209,278,992.35, 288,802,717.56 and 115,191,127.67

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Solution

The fourth proportional to 209,278,992.35, 288,802,717.56 and 115,191,127.67 is: 158,962,494.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,278,992.35 : 288,802,717.56 = 115,191,127.67 : x
  2. Step 2: Convert to fraction form
    209,278,992.35/288,802,717.56 = 115,191,127.67/x
  3. Step 3: Cross multiply
    209,278,992.35x = 288,802,717.56 × 115,191,127.67
  4. Step 4: Simplify right side
    209,278,992.35x = 33,267,510,708,452,900
  5. Step 5: Solve for x
    x = 33,267,510,708,452,900/209,278,992.35
  6. Step 6: Final answer
    x = 158,962,494.69

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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.