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Finding the Fourth Proportional to 483,960.96, 725,976 and 128,973.12

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Solution

The fourth proportional to 483,960.96, 725,976 and 128,973.12 is: 193,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,960.96 : 725,976 = 128,973.12 : x
  2. Step 2: Convert to fraction form
    483,960.96/725,976 = 128,973.12/x
  3. Step 3: Cross multiply
    483,960.96x = 725,976 × 128,973.12
  4. Step 4: Simplify right side
    483,960.96x = 93,631,389,765.12
  5. Step 5: Solve for x
    x = 93,631,389,765.12/483,960.96
  6. Step 6: Final answer
    x = 193,468.89

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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.