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Finding the Fourth Proportional to 343,929.70, 515,116.95 and 203,961.70

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Solution

The fourth proportional to 343,929.70, 515,116.95 and 203,961.70 is: 305,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,929.70 : 515,116.95 = 203,961.70 : x
  2. Step 2: Convert to fraction form
    343,929.70/515,116.95 = 203,961.70/x
  3. Step 3: Cross multiply
    343,929.70x = 515,116.95 × 203,961.70
  4. Step 4: Simplify right side
    343,929.70x = 105,064,128,820.82
  5. Step 5: Solve for x
    x = 105,064,128,820.82/343,929.70
  6. Step 6: Final answer
    x = 305,481.41

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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.