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Finding the Fourth Proportional to 343,680.86, 515,357.66 and 141,245.33

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Solution

The fourth proportional to 343,680.86, 515,357.66 and 141,245.33 is: 211,800.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,680.86 : 515,357.66 = 141,245.33 : x
  2. Step 2: Convert to fraction form
    343,680.86/515,357.66 = 141,245.33/x
  3. Step 3: Cross multiply
    343,680.86x = 515,357.66 × 141,245.33
  4. Step 4: Simplify right side
    343,680.86x = 72,791,859,471.71
  5. Step 5: Solve for x
    x = 72,791,859,471.71/343,680.86
  6. Step 6: Final answer
    x = 211,800.74

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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.