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Finding the Fourth Proportional to 215,258.00, 322,915.19 and 71,115.90

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Solution

The fourth proportional to 215,258.00, 322,915.19 and 71,115.90 is: 106,683.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,258.00 : 322,915.19 = 71,115.90 : x
  2. Step 2: Convert to fraction form
    215,258.00/322,915.19 = 71,115.90/x
  3. Step 3: Cross multiply
    215,258.00x = 322,915.19 × 71,115.90
  4. Step 4: Simplify right side
    215,258.00x = 22,964,404,004.94
  5. Step 5: Solve for x
    x = 22,964,404,004.94/215,258.00
  6. Step 6: Final answer
    x = 106,683.16

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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.