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Finding the Fourth Proportional to 248,689.78, 343,192.32 and 135,512.52

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Solution

The fourth proportional to 248,689.78, 343,192.32 and 135,512.52 is: 187,007.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,689.78 : 343,192.32 = 135,512.52 : x
  2. Step 2: Convert to fraction form
    248,689.78/343,192.32 = 135,512.52/x
  3. Step 3: Cross multiply
    248,689.78x = 343,192.32 × 135,512.52
  4. Step 4: Simplify right side
    248,689.78x = 46,506,856,127.85
  5. Step 5: Solve for x
    x = 46,506,856,127.85/248,689.78
  6. Step 6: Final answer
    x = 187,007.51

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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.