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Finding the Fourth Proportional to 343,794.88, 515,680.92 and 141,383.98

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Solution

The fourth proportional to 343,794.88, 515,680.92 and 141,383.98 is: 212,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,794.88 : 515,680.92 = 141,383.98 : x
  2. Step 2: Convert to fraction form
    343,794.88/515,680.92 = 141,383.98/x
  3. Step 3: Cross multiply
    343,794.88x = 515,680.92 × 141,383.98
  4. Step 4: Simplify right side
    343,794.88x = 72,909,020,879.66
  5. Step 5: Solve for x
    x = 72,909,020,879.66/343,794.88
  6. Step 6: Final answer
    x = 212,071.28

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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.