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Finding the Fourth Proportional to 368,769.96, 553,197.77 and 128,809.59

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Solution

The fourth proportional to 368,769.96, 553,197.77 and 128,809.59 is: 193,229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,769.96 : 553,197.77 = 128,809.59 : x
  2. Step 2: Convert to fraction form
    368,769.96/553,197.77 = 128,809.59/x
  3. Step 3: Cross multiply
    368,769.96x = 553,197.77 × 128,809.59
  4. Step 4: Simplify right side
    368,769.96x = 71,257,177,298.57
  5. Step 5: Solve for x
    x = 71,257,177,298.57/368,769.96
  6. Step 6: Final answer
    x = 193,229.34

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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.