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Finding the Fourth Proportional to 368,910.44, 553,526.48 and 129,196.31

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Solution

The fourth proportional to 368,910.44, 553,526.48 and 129,196.31 is: 193,850.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,910.44 : 553,526.48 = 129,196.31 : x
  2. Step 2: Convert to fraction form
    368,910.44/553,526.48 = 129,196.31/x
  3. Step 3: Cross multiply
    368,910.44x = 553,526.48 × 129,196.31
  4. Step 4: Simplify right side
    368,910.44x = 71,513,575,289.67
  5. Step 5: Solve for x
    x = 71,513,575,289.67/368,910.44
  6. Step 6: Final answer
    x = 193,850.78

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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.