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Finding the Fourth Proportional to 217,889.93, 300,718.37 and 122,403.89

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Solution

The fourth proportional to 217,889.93, 300,718.37 and 122,403.89 is: 168,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,889.93 : 300,718.37 = 122,403.89 : x
  2. Step 2: Convert to fraction form
    217,889.93/300,718.37 = 122,403.89/x
  3. Step 3: Cross multiply
    217,889.93x = 300,718.37 × 122,403.89
  4. Step 4: Simplify right side
    217,889.93x = 36,809,097,670.44
  5. Step 5: Solve for x
    x = 36,809,097,670.44/217,889.93
  6. Step 6: Final answer
    x = 168,934.37

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1.5x scale

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.