Home / 209,870.38-289,619.31-114,377.05

Finding the Fourth Proportional to 209,870.38, 289,619.31 and 114,377.05

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Solution

The fourth proportional to 209,870.38, 289,619.31 and 114,377.05 is: 157,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,870.38 : 289,619.31 = 114,377.05 : x
  2. Step 2: Convert to fraction form
    209,870.38/289,619.31 = 114,377.05/x
  3. Step 3: Cross multiply
    209,870.38x = 289,619.31 × 114,377.05
  4. Step 4: Simplify right side
    209,870.38x = 33,125,802,300.84
  5. Step 5: Solve for x
    x = 33,125,802,300.84/209,870.38
  6. Step 6: Final answer
    x = 157,839.34

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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.