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Finding the Fourth Proportional to 343,876.40, 515,814.60 and 343,876.40

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Solution

The fourth proportional to 343,876.40, 515,814.60 and 343,876.40 is: 515,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,876.40 : 515,814.60 = 343,876.40 : x
  2. Step 2: Convert to fraction form
    343,876.40/515,814.60 = 343,876.40/x
  3. Step 3: Cross multiply
    343,876.40x = 515,814.60 × 343,876.40
  4. Step 4: Simplify right side
    343,876.40x = 177,376,467,715.44
  5. Step 5: Solve for x
    x = 177,376,467,715.44/343,876.40
  6. Step 6: Final answer
    x = 515,814.60

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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.