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Finding the Fourth Proportional to 647,157.27, 971,173.31 and 226,436.79

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Solution

The fourth proportional to 647,157.27, 971,173.31 and 226,436.79 is: 339,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,157.27 : 971,173.31 = 226,436.79 : x
  2. Step 2: Convert to fraction form
    647,157.27/971,173.31 = 226,436.79/x
  3. Step 3: Cross multiply
    647,157.27x = 971,173.31 × 226,436.79
  4. Step 4: Simplify right side
    647,157.27x = 219,909,365,717.89
  5. Step 5: Solve for x
    x = 219,909,365,717.89/647,157.27
  6. Step 6: Final answer
    x = 339,808.23

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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.