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Finding the Fourth Proportional to 647,957.80, 971,936.70 and 227,081.80

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Solution

The fourth proportional to 647,957.80, 971,936.70 and 227,081.80 is: 340,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,957.80 : 971,936.70 = 227,081.80 : x
  2. Step 2: Convert to fraction form
    647,957.80/971,936.70 = 227,081.80/x
  3. Step 3: Cross multiply
    647,957.80x = 971,936.70 × 227,081.80
  4. Step 4: Simplify right side
    647,957.80x = 220,709,135,322.06
  5. Step 5: Solve for x
    x = 220,709,135,322.06/647,957.80
  6. Step 6: Final answer
    x = 340,622.70

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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.