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Finding the Fourth Proportional to 321,691,205.80, 482,536,808.70 and 185,642,309.80

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Solution

The fourth proportional to 321,691,205.80, 482,536,808.70 and 185,642,309.80 is: 278,463,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,691,205.80 : 482,536,808.70 = 185,642,309.80 : x
  2. Step 2: Convert to fraction form
    321,691,205.80/482,536,808.70 = 185,642,309.80/x
  3. Step 3: Cross multiply
    321,691,205.80x = 482,536,808.70 × 185,642,309.80
  4. Step 4: Simplify right side
    321,691,205.80x = 89,579,247,730,588,736
  5. Step 5: Solve for x
    x = 89,579,247,730,588,736/321,691,205.80
  6. Step 6: Final answer
    x = 278,463,464.70

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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.