Home / 210,840.12-290,979.39-115,361.16

Finding the Fourth Proportional to 210,840.12, 290,979.39 and 115,361.16

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Solution

The fourth proportional to 210,840.12, 290,979.39 and 115,361.16 is: 159,209.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,840.12 : 290,979.39 = 115,361.16 : x
  2. Step 2: Convert to fraction form
    210,840.12/290,979.39 = 115,361.16/x
  3. Step 3: Cross multiply
    210,840.12x = 290,979.39 × 115,361.16
  4. Step 4: Simplify right side
    210,840.12x = 33,567,719,966.49
  5. Step 5: Solve for x
    x = 33,567,719,966.49/210,840.12
  6. Step 6: Final answer
    x = 159,209.36

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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.