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Finding the Fourth Proportional to 248,291.46, 342,618.53 and 139,370.84

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Solution

The fourth proportional to 248,291.46, 342,618.53 and 139,370.84 is: 192,318.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,291.46 : 342,618.53 = 139,370.84 : x
  2. Step 2: Convert to fraction form
    248,291.46/342,618.53 = 139,370.84/x
  3. Step 3: Cross multiply
    248,291.46x = 342,618.53 × 139,370.84
  4. Step 4: Simplify right side
    248,291.46x = 47,751,033,389.09
  5. Step 5: Solve for x
    x = 47,751,033,389.09/248,291.46
  6. Step 6: Final answer
    x = 192,318.47

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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.