Home / 323,721.90-485,619.30-99,080.55

Finding the Fourth Proportional to 323,721.90, 485,619.30 and 99,080.55

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Solution

The fourth proportional to 323,721.90, 485,619.30 and 99,080.55 is: 148,631.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,721.90 : 485,619.30 = 99,080.55 : x
  2. Step 2: Convert to fraction form
    323,721.90/485,619.30 = 99,080.55/x
  3. Step 3: Cross multiply
    323,721.90x = 485,619.30 × 99,080.55
  4. Step 4: Simplify right side
    323,721.90x = 48,115,427,334.62
  5. Step 5: Solve for x
    x = 48,115,427,334.62/323,721.90
  6. Step 6: Final answer
    x = 148,631.98

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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.