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Finding the Fourth Proportional to 389,620.80, 584,258.40 and 179,323.20

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Solution

The fourth proportional to 389,620.80, 584,258.40 and 179,323.20 is: 268,905.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,620.80 : 584,258.40 = 179,323.20 : x
  2. Step 2: Convert to fraction form
    389,620.80/584,258.40 = 179,323.20/x
  3. Step 3: Cross multiply
    389,620.80x = 584,258.40 × 179,323.20
  4. Step 4: Simplify right side
    389,620.80x = 104,771,085,914.88
  5. Step 5: Solve for x
    x = 104,771,085,914.88/389,620.80
  6. Step 6: Final answer
    x = 268,905.27

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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.