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Finding the Fourth Proportional to 248,808.56, 343,355.82 and 135,631.40

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Solution

The fourth proportional to 248,808.56, 343,355.82 and 135,631.40 is: 187,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,808.56 : 343,355.82 = 135,631.40 : x
  2. Step 2: Convert to fraction form
    248,808.56/343,355.82 = 135,631.40/x
  3. Step 3: Cross multiply
    248,808.56x = 343,355.82 × 135,631.40
  4. Step 4: Simplify right side
    248,808.56x = 46,569,830,564.75
  5. Step 5: Solve for x
    x = 46,569,830,564.75/248,808.56
  6. Step 6: Final answer
    x = 187,171.34

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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.