Home / 485,619.49-728,304.99-143,983.04

Finding the Fourth Proportional to 485,619.49, 728,304.99 and 143,983.04

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Solution

The fourth proportional to 485,619.49, 728,304.99 and 143,983.04 is: 215,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,619.49 : 728,304.99 = 143,983.04 : x
  2. Step 2: Convert to fraction form
    485,619.49/728,304.99 = 143,983.04/x
  3. Step 3: Cross multiply
    485,619.49x = 728,304.99 × 143,983.04
  4. Step 4: Simplify right side
    485,619.49x = 104,863,562,325.91
  5. Step 5: Solve for x
    x = 104,863,562,325.91/485,619.49
  6. Step 6: Final answer
    x = 215,937.71

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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.