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Finding the Fourth Proportional to 253,968.41, 350,479.78 and 139,246.80

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Solution

The fourth proportional to 253,968.41, 350,479.78 and 139,246.80 is: 192,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,968.41 : 350,479.78 = 139,246.80 : x
  2. Step 2: Convert to fraction form
    253,968.41/350,479.78 = 139,246.80/x
  3. Step 3: Cross multiply
    253,968.41x = 350,479.78 × 139,246.80
  4. Step 4: Simplify right side
    253,968.41x = 48,803,186,167.29
  5. Step 5: Solve for x
    x = 48,803,186,167.29/253,968.41
  6. Step 6: Final answer
    x = 192,162.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.