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Finding the Fourth Proportional to 343,707.68, 515,494.74 and 172,883.88

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Solution

The fourth proportional to 343,707.68, 515,494.74 and 172,883.88 is: 259,292.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,707.68 : 515,494.74 = 172,883.88 : x
  2. Step 2: Convert to fraction form
    343,707.68/515,494.74 = 172,883.88/x
  3. Step 3: Cross multiply
    343,707.68x = 515,494.74 × 172,883.88
  4. Step 4: Simplify right side
    343,707.68x = 89,120,730,770.79
  5. Step 5: Solve for x
    x = 89,120,730,770.79/343,707.68
  6. Step 6: Final answer
    x = 259,292.23

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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.