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Finding the Fourth Proportional to 647,170.30, 971,047.05 and 310,080.70

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Solution

The fourth proportional to 647,170.30, 971,047.05 and 310,080.70 is: 465,260.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,170.30 : 971,047.05 = 310,080.70 : x
  2. Step 2: Convert to fraction form
    647,170.30/971,047.05 = 310,080.70/x
  3. Step 3: Cross multiply
    647,170.30x = 971,047.05 × 310,080.70
  4. Step 4: Simplify right side
    647,170.30x = 301,102,948,996.94
  5. Step 5: Solve for x
    x = 301,102,948,996.94/647,170.30
  6. Step 6: Final answer
    x = 465,260.77

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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.