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Finding the Fourth Proportional to 217,811.65, 305,247.35 and 217,811.65

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Solution

The fourth proportional to 217,811.65, 305,247.35 and 217,811.65 is: 305,247.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,811.65 : 305,247.35 = 217,811.65 : x
  2. Step 2: Convert to fraction form
    217,811.65/305,247.35 = 217,811.65/x
  3. Step 3: Cross multiply
    217,811.65x = 305,247.35 × 217,811.65
  4. Step 4: Simplify right side
    217,811.65x = 66,486,428,961.63
  5. Step 5: Solve for x
    x = 66,486,428,961.63/217,811.65
  6. Step 6: Final answer
    x = 305,247.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.