Home / 209,279,015.31-288,802,749.25-115,191,150.63

Finding the Fourth Proportional to 209,279,015.31, 288,802,749.25 and 115,191,150.63

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Solution

The fourth proportional to 209,279,015.31, 288,802,749.25 and 115,191,150.63 is: 158,962,526.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,279,015.31 : 288,802,749.25 = 115,191,150.63 : x
  2. Step 2: Convert to fraction form
    209,279,015.31/288,802,749.25 = 115,191,150.63/x
  3. Step 3: Cross multiply
    209,279,015.31x = 288,802,749.25 × 115,191,150.63
  4. Step 4: Simplify right side
    209,279,015.31x = 33,267,520,992,467,400
  5. Step 5: Solve for x
    x = 33,267,520,992,467,400/209,279,015.31
  6. Step 6: Final answer
    x = 158,962,526.38

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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.