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Finding the Fourth Proportional to 389,906.40, 585,550.80 and 301,375.20

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Solution

The fourth proportional to 389,906.40, 585,550.80 and 301,375.20 is: 452,597.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,906.40 : 585,550.80 = 301,375.20 : x
  2. Step 2: Convert to fraction form
    389,906.40/585,550.80 = 301,375.20/x
  3. Step 3: Cross multiply
    389,906.40x = 585,550.80 × 301,375.20
  4. Step 4: Simplify right side
    389,906.40x = 176,470,489,460.16
  5. Step 5: Solve for x
    x = 176,470,489,460.16/389,906.40
  6. Step 6: Final answer
    x = 452,597.06

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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.