Home / 268,272.25-401,796.01-128,129.29

Finding the Fourth Proportional to 268,272.25, 401,796.01 and 128,129.29

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Solution

The fourth proportional to 268,272.25, 401,796.01 and 128,129.29 is: 191,901.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,272.25 : 401,796.01 = 128,129.29 : x
  2. Step 2: Convert to fraction form
    268,272.25/401,796.01 = 128,129.29/x
  3. Step 3: Cross multiply
    268,272.25x = 401,796.01 × 128,129.29
  4. Step 4: Simplify right side
    268,272.25x = 51,481,837,486.13
  5. Step 5: Solve for x
    x = 51,481,837,486.13/268,272.25
  6. Step 6: Final answer
    x = 191,901.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.