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Finding the Fourth Proportional to 345,676.52, 518,513.52 and 135,166.16

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Solution

The fourth proportional to 345,676.52, 518,513.52 and 135,166.16 is: 202,748.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,676.52 : 518,513.52 = 135,166.16 : x
  2. Step 2: Convert to fraction form
    345,676.52/518,513.52 = 135,166.16/x
  3. Step 3: Cross multiply
    345,676.52x = 518,513.52 × 135,166.16
  4. Step 4: Simplify right side
    345,676.52x = 70,085,481,406.48
  5. Step 5: Solve for x
    x = 70,085,481,406.48/345,676.52
  6. Step 6: Final answer
    x = 202,748.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.