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Finding the Fourth Proportional to 343,877.20, 515,662.20 and 133,445.20

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Solution

The fourth proportional to 343,877.20, 515,662.20 and 133,445.20 is: 200,108.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,877.20 : 515,662.20 = 133,445.20 : x
  2. Step 2: Convert to fraction form
    343,877.20/515,662.20 = 133,445.20/x
  3. Step 3: Cross multiply
    343,877.20x = 515,662.20 × 133,445.20
  4. Step 4: Simplify right side
    343,877.20x = 68,812,645,411.44
  5. Step 5: Solve for x
    x = 68,812,645,411.44/343,877.20
  6. Step 6: Final answer
    x = 200,108.19

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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.