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Finding the Fourth Proportional to 210,832.80, 290,936.88 and 115,320.48

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Solution

The fourth proportional to 210,832.80, 290,936.88 and 115,320.48 is: 159,135.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,832.80 : 290,936.88 = 115,320.48 : x
  2. Step 2: Convert to fraction form
    210,832.80/290,936.88 = 115,320.48/x
  3. Step 3: Cross multiply
    210,832.80x = 290,936.88 × 115,320.48
  4. Step 4: Simplify right side
    210,832.80x = 33,550,980,651.30
  5. Step 5: Solve for x
    x = 33,550,980,651.30/210,832.80
  6. Step 6: Final answer
    x = 159,135.49

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1.5x scale

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.