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Finding the Fourth Proportional to 217,038.51, 325,650.69 and 111,931.29

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Solution

The fourth proportional to 217,038.51, 325,650.69 and 111,931.29 is: 167,944.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,038.51 : 325,650.69 = 111,931.29 : x
  2. Step 2: Convert to fraction form
    217,038.51/325,650.69 = 111,931.29/x
  3. Step 3: Cross multiply
    217,038.51x = 325,650.69 × 111,931.29
  4. Step 4: Simplify right side
    217,038.51x = 36,450,501,821.09
  5. Step 5: Solve for x
    x = 36,450,501,821.09/217,038.51
  6. Step 6: Final answer
    x = 167,944.86

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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.