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Finding the Fourth Proportional to 248,989.54, 343,602.57 and 135,809.86

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Solution

The fourth proportional to 248,989.54, 343,602.57 and 135,809.86 is: 187,415.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,989.54 : 343,602.57 = 135,809.86 : x
  2. Step 2: Convert to fraction form
    248,989.54/343,602.57 = 135,809.86/x
  3. Step 3: Cross multiply
    248,989.54x = 343,602.57 × 135,809.86
  4. Step 4: Simplify right side
    248,989.54x = 46,664,616,927.34
  5. Step 5: Solve for x
    x = 46,664,616,927.34/248,989.54
  6. Step 6: Final answer
    x = 187,415.97

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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.