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Finding the Fourth Proportional to 343,630.86, 515,239.13 and 154,056.96

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Solution

The fourth proportional to 343,630.86, 515,239.13 and 154,056.96 is: 230,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,630.86 : 515,239.13 = 154,056.96 : x
  2. Step 2: Convert to fraction form
    343,630.86/515,239.13 = 154,056.96/x
  3. Step 3: Cross multiply
    343,630.86x = 515,239.13 × 154,056.96
  4. Step 4: Simplify right side
    343,630.86x = 79,376,173,270.56
  5. Step 5: Solve for x
    x = 79,376,173,270.56/343,630.86
  6. Step 6: Final answer
    x = 230,992.56

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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.