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Finding the Fourth Proportional to 323,317.88, 485,049.18 and 98,698.28

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Solution

The fourth proportional to 323,317.88, 485,049.18 and 98,698.28 is: 148,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,317.88 : 485,049.18 = 98,698.28 : x
  2. Step 2: Convert to fraction form
    323,317.88/485,049.18 = 98,698.28/x
  3. Step 3: Cross multiply
    323,317.88x = 485,049.18 × 98,698.28
  4. Step 4: Simplify right side
    323,317.88x = 47,873,519,781.41
  5. Step 5: Solve for x
    x = 47,873,519,781.41/323,317.88
  6. Step 6: Final answer
    x = 148,069.51

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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.