Home / 209,832,795.74-289,569,537.05-115,744,820.30

Finding the Fourth Proportional to 209,832,795.74, 289,569,537.05 and 115,744,820.30

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Solution

The fourth proportional to 209,832,795.74, 289,569,537.05 and 115,744,820.30 is: 159,728,005.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,832,795.74 : 289,569,537.05 = 115,744,820.30 : x
  2. Step 2: Convert to fraction form
    209,832,795.74/289,569,537.05 = 115,744,820.30/x
  3. Step 3: Cross multiply
    209,832,795.74x = 289,569,537.05 × 115,744,820.30
  4. Step 4: Simplify right side
    209,832,795.74x = 33,516,174,029,627,720
  5. Step 5: Solve for x
    x = 33,516,174,029,627,720/209,832,795.74
  6. Step 6: Final answer
    x = 159,728,005.87

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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.