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Finding the Fourth Proportional to 218,439.91, 301,364.79 and 127,766.89

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Solution

The fourth proportional to 218,439.91, 301,364.79 and 127,766.89 is: 176,270.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,439.91 : 301,364.79 = 127,766.89 : x
  2. Step 2: Convert to fraction form
    218,439.91/301,364.79 = 127,766.89/x
  3. Step 3: Cross multiply
    218,439.91x = 301,364.79 × 127,766.89
  4. Step 4: Simplify right side
    218,439.91x = 38,504,441,973.80
  5. Step 5: Solve for x
    x = 38,504,441,973.80/218,439.91
  6. Step 6: Final answer
    x = 176,270.18

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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.