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Finding the Fourth Proportional to 223,178.82, 308,040.42 and 127,740.90

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Solution

The fourth proportional to 223,178.82, 308,040.42 and 127,740.90 is: 176,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,178.82 : 308,040.42 = 127,740.90 : x
  2. Step 2: Convert to fraction form
    223,178.82/308,040.42 = 127,740.90/x
  3. Step 3: Cross multiply
    223,178.82x = 308,040.42 × 127,740.90
  4. Step 4: Simplify right side
    223,178.82x = 39,349,360,487.18
  5. Step 5: Solve for x
    x = 39,349,360,487.18/223,178.82
  6. Step 6: Final answer
    x = 176,313.15

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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.