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Finding the Fourth Proportional to 225,287.04, 310,965.36 and 129,857.52

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Solution

The fourth proportional to 225,287.04, 310,965.36 and 129,857.52 is: 179,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,287.04 : 310,965.36 = 129,857.52 : x
  2. Step 2: Convert to fraction form
    225,287.04/310,965.36 = 129,857.52/x
  3. Step 3: Cross multiply
    225,287.04x = 310,965.36 × 129,857.52
  4. Step 4: Simplify right side
    225,287.04x = 40,381,190,455.51
  5. Step 5: Solve for x
    x = 40,381,190,455.51/225,287.04
  6. Step 6: Final answer
    x = 179,243.29

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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.