Home / 210,538.60-290,539.78-115,043.25

Finding the Fourth Proportional to 210,538.60, 290,539.78 and 115,043.25

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Solution

The fourth proportional to 210,538.60, 290,539.78 and 115,043.25 is: 158,757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,538.60 : 290,539.78 = 115,043.25 : x
  2. Step 2: Convert to fraction form
    210,538.60/290,539.78 = 115,043.25/x
  3. Step 3: Cross multiply
    210,538.60x = 290,539.78 × 115,043.25
  4. Step 4: Simplify right side
    210,538.60x = 33,424,640,545.49
  5. Step 5: Solve for x
    x = 33,424,640,545.49/210,538.60
  6. Step 6: Final answer
    x = 158,757.78

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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.