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Finding the Fourth Proportional to 217,501.94, 326,239.88 and 67,721.16

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Solution

The fourth proportional to 217,501.94, 326,239.88 and 67,721.16 is: 101,577.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,501.94 : 326,239.88 = 67,721.16 : x
  2. Step 2: Convert to fraction form
    217,501.94/326,239.88 = 67,721.16/x
  3. Step 3: Cross multiply
    217,501.94x = 326,239.88 × 67,721.16
  4. Step 4: Simplify right side
    217,501.94x = 22,093,343,111.86
  5. Step 5: Solve for x
    x = 22,093,343,111.86/217,501.94
  6. Step 6: Final answer
    x = 101,577.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.