Home / 209,422,812.31-288,999,955.10-115,345,719.97

Finding the Fourth Proportional to 209,422,812.31, 288,999,955.10 and 115,345,719.97

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Solution

The fourth proportional to 209,422,812.31, 288,999,955.10 and 115,345,719.97 is: 159,175,151.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,422,812.31 : 288,999,955.10 = 115,345,719.97 : x
  2. Step 2: Convert to fraction form
    209,422,812.31/288,999,955.10 = 115,345,719.97/x
  3. Step 3: Cross multiply
    209,422,812.31x = 288,999,955.10 × 115,345,719.97
  4. Step 4: Simplify right side
    209,422,812.31x = 33,334,907,893,500,112
  5. Step 5: Solve for x
    x = 33,334,907,893,500,112/209,422,812.31
  6. Step 6: Final answer
    x = 159,175,151.58

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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.