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Finding the Fourth Proportional to 321,761,387.20, 482,642,080.80 and 321,761,387.20

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Solution

The fourth proportional to 321,761,387.20, 482,642,080.80 and 321,761,387.20 is: 482,642,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,761,387.20 : 482,642,080.80 = 321,761,387.20 : x
  2. Step 2: Convert to fraction form
    321,761,387.20/482,642,080.80 = 321,761,387.20/x
  3. Step 3: Cross multiply
    321,761,387.20x = 482,642,080.80 × 321,761,387.20
  4. Step 4: Simplify right side
    321,761,387.20x = 155,295,585,439,302,496
  5. Step 5: Solve for x
    x = 155,295,585,439,302,496/321,761,387.20
  6. Step 6: Final answer
    x = 482,642,080.80

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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.