Home / 209,279,010.46-288,802,742.52-115,191,145.75

Finding the Fourth Proportional to 209,279,010.46, 288,802,742.52 and 115,191,145.75

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Solution

The fourth proportional to 209,279,010.46, 288,802,742.52 and 115,191,145.75 is: 158,962,519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,279,010.46 : 288,802,742.52 = 115,191,145.75 : x
  2. Step 2: Convert to fraction form
    209,279,010.46/288,802,742.52 = 115,191,145.75/x
  3. Step 3: Cross multiply
    209,279,010.46x = 288,802,742.52 × 115,191,145.75
  4. Step 4: Simplify right side
    209,279,010.46x = 33,267,518,806,621,040
  5. Step 5: Solve for x
    x = 33,267,518,806,621,040/209,279,010.46
  6. Step 6: Final answer
    x = 158,962,519.62

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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.