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Finding the Fourth Proportional to 491,161.88, 736,865.42 and 171,318.36

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Solution

The fourth proportional to 491,161.88, 736,865.42 and 171,318.36 is: 257,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,161.88 : 736,865.42 = 171,318.36 : x
  2. Step 2: Convert to fraction form
    491,161.88/736,865.42 = 171,318.36/x
  3. Step 3: Cross multiply
    491,161.88x = 736,865.42 × 171,318.36
  4. Step 4: Simplify right side
    491,161.88x = 126,238,574,438.52
  5. Step 5: Solve for x
    x = 126,238,574,438.52/491,161.88
  6. Step 6: Final answer
    x = 257,020.30

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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.