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Finding the Fourth Proportional to 223,909.44, 308,989.44 and 127,131.36

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Solution

The fourth proportional to 223,909.44, 308,989.44 and 127,131.36 is: 175,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,909.44 : 308,989.44 = 127,131.36 : x
  2. Step 2: Convert to fraction form
    223,909.44/308,989.44 = 127,131.36/x
  3. Step 3: Cross multiply
    223,909.44x = 308,989.44 × 127,131.36
  4. Step 4: Simplify right side
    223,909.44x = 39,282,247,732.84
  5. Step 5: Solve for x
    x = 39,282,247,732.84/223,909.44
  6. Step 6: Final answer
    x = 175,438.10

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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.