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Finding the Fourth Proportional to 343,361.92, 515,271.36 and 141,123.88

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Solution

The fourth proportional to 343,361.92, 515,271.36 and 141,123.88 is: 211,779.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,361.92 : 515,271.36 = 141,123.88 : x
  2. Step 2: Convert to fraction form
    343,361.92/515,271.36 = 141,123.88/x
  3. Step 3: Cross multiply
    343,361.92x = 515,271.36 × 141,123.88
  4. Step 4: Simplify right side
    343,361.92x = 72,717,093,576.08
  5. Step 5: Solve for x
    x = 72,717,093,576.08/343,361.92
  6. Step 6: Final answer
    x = 211,779.73

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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.