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Finding the Fourth Proportional to 223,214.37, 308,019.90 and 126,390.41

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Solution

The fourth proportional to 223,214.37, 308,019.90 and 126,390.41 is: 174,409.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,214.37 : 308,019.90 = 126,390.41 : x
  2. Step 2: Convert to fraction form
    223,214.37/308,019.90 = 126,390.41/x
  3. Step 3: Cross multiply
    223,214.37x = 308,019.90 × 126,390.41
  4. Step 4: Simplify right side
    223,214.37x = 38,930,760,827.15
  5. Step 5: Solve for x
    x = 38,930,760,827.15/223,214.37
  6. Step 6: Final answer
    x = 174,409.75

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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.