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Finding the Fourth Proportional to 251,230.60, 376,262.70 and 171,915.40

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Solution

The fourth proportional to 251,230.60, 376,262.70 and 171,915.40 is: 257,474.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,230.60 : 376,262.70 = 171,915.40 : x
  2. Step 2: Convert to fraction form
    251,230.60/376,262.70 = 171,915.40/x
  3. Step 3: Cross multiply
    251,230.60x = 376,262.70 × 171,915.40
  4. Step 4: Simplify right side
    251,230.60x = 64,685,352,575.58
  5. Step 5: Solve for x
    x = 64,685,352,575.58/251,230.60
  6. Step 6: Final answer
    x = 257,474.02

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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.