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Finding the Fourth Proportional to 343,441.55, 515,240.80 and 118,801.82

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Solution

The fourth proportional to 343,441.55, 515,240.80 and 118,801.82 is: 178,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,441.55 : 515,240.80 = 118,801.82 : x
  2. Step 2: Convert to fraction form
    343,441.55/515,240.80 = 118,801.82/x
  3. Step 3: Cross multiply
    343,441.55x = 515,240.80 × 118,801.82
  4. Step 4: Simplify right side
    343,441.55x = 61,211,545,769.35
  5. Step 5: Solve for x
    x = 61,211,545,769.35/343,441.55
  6. Step 6: Final answer
    x = 178,229.88

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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.