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Finding the Fourth Proportional to 248,920.91, 373,371.74 and 71,427.90

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Solution

The fourth proportional to 248,920.91, 373,371.74 and 71,427.90 is: 107,139.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,920.91 : 373,371.74 = 71,427.90 : x
  2. Step 2: Convert to fraction form
    248,920.91/373,371.74 = 71,427.90/x
  3. Step 3: Cross multiply
    248,920.91x = 373,371.74 × 71,427.90
  4. Step 4: Simplify right side
    248,920.91x = 26,669,160,618.41
  5. Step 5: Solve for x
    x = 26,669,160,618.41/248,920.91
  6. Step 6: Final answer
    x = 107,139.09

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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.