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Finding the Fourth Proportional to 391,978,573.83, 588,376,453.43 and 173,782,148.81

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Solution

The fourth proportional to 391,978,573.83, 588,376,453.43 and 173,782,148.81 is: 260,854,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,978,573.83 : 588,376,453.43 = 173,782,148.81 : x
  2. Step 2: Convert to fraction form
    391,978,573.83/588,376,453.43 = 173,782,148.81/x
  3. Step 3: Cross multiply
    391,978,573.83x = 588,376,453.43 × 173,782,148.81
  4. Step 4: Simplify right side
    391,978,573.83x = 102,249,324,382,461,504
  5. Step 5: Solve for x
    x = 102,249,324,382,461,504/391,978,573.83
  6. Step 6: Final answer
    x = 260,854,371.15

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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.