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Finding the Fourth Proportional to 322,401.90, 483,430.05 and 135,201.90

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Solution

The fourth proportional to 322,401.90, 483,430.05 and 135,201.90 is: 202,730.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,401.90 : 483,430.05 = 135,201.90 : x
  2. Step 2: Convert to fraction form
    322,401.90/483,430.05 = 135,201.90/x
  3. Step 3: Cross multiply
    322,401.90x = 483,430.05 × 135,201.90
  4. Step 4: Simplify right side
    322,401.90x = 65,360,661,277.10
  5. Step 5: Solve for x
    x = 65,360,661,277.10/322,401.90
  6. Step 6: Final answer
    x = 202,730.38

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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.