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Finding the Fourth Proportional to 268,171.85, 401,915.80 and 125,702.88

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Solution

The fourth proportional to 268,171.85, 401,915.80 and 125,702.88 is: 188,394.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,171.85 : 401,915.80 = 125,702.88 : x
  2. Step 2: Convert to fraction form
    268,171.85/401,915.80 = 125,702.88/x
  3. Step 3: Cross multiply
    268,171.85x = 401,915.80 × 125,702.88
  4. Step 4: Simplify right side
    268,171.85x = 50,521,973,577.50
  5. Step 5: Solve for x
    x = 50,521,973,577.50/268,171.85
  6. Step 6: Final answer
    x = 188,394.02

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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.