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Finding the Fourth Proportional to 486,969.20, 730,108.20 and 220,857.20

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Solution

The fourth proportional to 486,969.20, 730,108.20 and 220,857.20 is: 331,129.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,969.20 : 730,108.20 = 220,857.20 : x
  2. Step 2: Convert to fraction form
    486,969.20/730,108.20 = 220,857.20/x
  3. Step 3: Cross multiply
    486,969.20x = 730,108.20 × 220,857.20
  4. Step 4: Simplify right side
    486,969.20x = 161,249,652,749.04
  5. Step 5: Solve for x
    x = 161,249,652,749.04/486,969.20
  6. Step 6: Final answer
    x = 331,129.06

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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.