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Finding the Fourth Proportional to 485,757.36, 728,570.22 and 130,792.68

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Solution

The fourth proportional to 485,757.36, 728,570.22 and 130,792.68 is: 196,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,757.36 : 728,570.22 = 130,792.68 : x
  2. Step 2: Convert to fraction form
    485,757.36/728,570.22 = 130,792.68/x
  3. Step 3: Cross multiply
    485,757.36x = 728,570.22 × 130,792.68
  4. Step 4: Simplify right side
    485,757.36x = 95,291,651,641.99
  5. Step 5: Solve for x
    x = 95,291,651,641.99/485,757.36
  6. Step 6: Final answer
    x = 196,171.30

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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.