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Finding the Fourth Proportional to 253,915.88, 380,896.90 and 66,927.38

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Solution

The fourth proportional to 253,915.88, 380,896.90 and 66,927.38 is: 100,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,915.88 : 380,896.90 = 66,927.38 : x
  2. Step 2: Convert to fraction form
    253,915.88/380,896.90 = 66,927.38/x
  3. Step 3: Cross multiply
    253,915.88x = 380,896.90 × 66,927.38
  4. Step 4: Simplify right side
    253,915.88x = 25,492,429,495.32
  5. Step 5: Solve for x
    x = 25,492,429,495.32/253,915.88
  6. Step 6: Final answer
    x = 100,397.15

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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.