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Finding the Fourth Proportional to 389,739.60, 585,046.80 and 301,384.80

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Solution

The fourth proportional to 389,739.60, 585,046.80 and 301,384.80 is: 452,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,739.60 : 585,046.80 = 301,384.80 : x
  2. Step 2: Convert to fraction form
    389,739.60/585,046.80 = 301,384.80/x
  3. Step 3: Cross multiply
    389,739.60x = 585,046.80 × 301,384.80
  4. Step 4: Simplify right side
    389,739.60x = 176,324,212,808.64
  5. Step 5: Solve for x
    x = 176,324,212,808.64/389,739.60
  6. Step 6: Final answer
    x = 452,415.44

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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.