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Finding the Fourth Proportional to 217,223.78, 325,835.01 and 55,117.51

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Solution

The fourth proportional to 217,223.78, 325,835.01 and 55,117.51 is: 82,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,223.78 : 325,835.01 = 55,117.51 : x
  2. Step 2: Convert to fraction form
    217,223.78/325,835.01 = 55,117.51/x
  3. Step 3: Cross multiply
    217,223.78x = 325,835.01 × 55,117.51
  4. Step 4: Simplify right side
    217,223.78x = 17,959,214,422.03
  5. Step 5: Solve for x
    x = 17,959,214,422.03/217,223.78
  6. Step 6: Final answer
    x = 82,676.10

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1.5x scale

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.