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Finding the Fourth Proportional to 248,292, 342,642.96 and 135,115.56

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Solution

The fourth proportional to 248,292, 342,642.96 and 135,115.56 is: 186,459.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,292 : 342,642.96 = 135,115.56 : x
  2. Step 2: Convert to fraction form
    248,292/342,642.96 = 135,115.56/x
  3. Step 3: Cross multiply
    248,292x = 342,642.96 × 135,115.56
  4. Step 4: Simplify right side
    248,292x = 46,296,395,420.46
  5. Step 5: Solve for x
    x = 46,296,395,420.46/248,292
  6. Step 6: Final answer
    x = 186,459.47

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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.