Home / 209,615,273.70-289,257,273.49-115,529,135.56

Finding the Fourth Proportional to 209,615,273.70, 289,257,273.49 and 115,529,135.56

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Solution

The fourth proportional to 209,615,273.70, 289,257,273.49 and 115,529,135.56 is: 159,423,701.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,615,273.70 : 289,257,273.49 = 115,529,135.56 : x
  2. Step 2: Convert to fraction form
    209,615,273.70/289,257,273.49 = 115,529,135.56/x
  3. Step 3: Cross multiply
    209,615,273.70x = 289,257,273.49 × 115,529,135.56
  4. Step 4: Simplify right side
    209,615,273.70x = 33,417,642,760,742,208
  5. Step 5: Solve for x
    x = 33,417,642,760,742,208/209,615,273.70
  6. Step 6: Final answer
    x = 159,423,701.20

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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.