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Finding the Fourth Proportional to 239,873.25, 331,054.25 and 139,271.25

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Solution

The fourth proportional to 239,873.25, 331,054.25 and 139,271.25 is: 192,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,873.25 : 331,054.25 = 139,271.25 : x
  2. Step 2: Convert to fraction form
    239,873.25/331,054.25 = 139,271.25/x
  3. Step 3: Cross multiply
    239,873.25x = 331,054.25 × 139,271.25
  4. Step 4: Simplify right side
    239,873.25x = 46,106,338,518.96
  5. Step 5: Solve for x
    x = 46,106,338,518.96/239,873.25
  6. Step 6: Final answer
    x = 192,211.26

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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.