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Finding the Fourth Proportional to 491,912.66, 737,946.66 and 172,153.82

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Solution

The fourth proportional to 491,912.66, 737,946.66 and 172,153.82 is: 258,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,912.66 : 737,946.66 = 172,153.82 : x
  2. Step 2: Convert to fraction form
    491,912.66/737,946.66 = 172,153.82/x
  3. Step 3: Cross multiply
    491,912.66x = 737,946.66 × 172,153.82
  4. Step 4: Simplify right side
    491,912.66x = 127,040,336,475.24
  5. Step 5: Solve for x
    x = 127,040,336,475.24/491,912.66
  6. Step 6: Final answer
    x = 258,257.91

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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.