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Finding the Fourth Proportional to 265,470.36, 397,995.04 and 139,086.36

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Solution

The fourth proportional to 265,470.36, 397,995.04 and 139,086.36 is: 208,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,470.36 : 397,995.04 = 139,086.36 : x
  2. Step 2: Convert to fraction form
    265,470.36/397,995.04 = 139,086.36/x
  3. Step 3: Cross multiply
    265,470.36x = 397,995.04 × 139,086.36
  4. Step 4: Simplify right side
    265,470.36x = 55,355,680,716.22
  5. Step 5: Solve for x
    x = 55,355,680,716.22/265,470.36
  6. Step 6: Final answer
    x = 208,519.26

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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.