Home / 485,018.28-727,608.96-218,772.36

Finding the Fourth Proportional to 485,018.28, 727,608.96 and 218,772.36

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Solution

The fourth proportional to 485,018.28, 727,608.96 and 218,772.36 is: 328,195.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,018.28 : 727,608.96 = 218,772.36 : x
  2. Step 2: Convert to fraction form
    485,018.28/727,608.96 = 218,772.36/x
  3. Step 3: Cross multiply
    485,018.28x = 727,608.96 × 218,772.36
  4. Step 4: Simplify right side
    485,018.28x = 159,180,729,336.35
  5. Step 5: Solve for x
    x = 159,180,729,336.35/485,018.28
  6. Step 6: Final answer
    x = 328,195.32

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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.