Home / 209,590,561.31-289,236,949.58-115,508,095.81

Finding the Fourth Proportional to 209,590,561.31, 289,236,949.58 and 115,508,095.81

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Solution

The fourth proportional to 209,590,561.31, 289,236,949.58 and 115,508,095.81 is: 159,402,260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,590,561.31 : 289,236,949.58 = 115,508,095.81 : x
  2. Step 2: Convert to fraction form
    209,590,561.31/289,236,949.58 = 115,508,095.81/x
  3. Step 3: Cross multiply
    209,590,561.31x = 289,236,949.58 × 115,508,095.81
  4. Step 4: Simplify right side
    209,590,561.31x = 33,409,209,283,444,456
  5. Step 5: Solve for x
    x = 33,409,209,283,444,456/209,590,561.31
  6. Step 6: Final answer
    x = 159,402,260.65

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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.