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Finding the Fourth Proportional to 342,890.72, 514,369.91 and 118,221.58

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Solution

The fourth proportional to 342,890.72, 514,369.91 and 118,221.58 is: 177,344.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,890.72 : 514,369.91 = 118,221.58 : x
  2. Step 2: Convert to fraction form
    342,890.72/514,369.91 = 118,221.58/x
  3. Step 3: Cross multiply
    342,890.72x = 514,369.91 × 118,221.58
  4. Step 4: Simplify right side
    342,890.72x = 60,809,623,464.66
  5. Step 5: Solve for x
    x = 60,809,623,464.66/342,890.72
  6. Step 6: Final answer
    x = 177,344.03

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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.