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Finding the Fourth Proportional to 323,842.20, 485,763.30 and 99,202.20

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Solution

The fourth proportional to 323,842.20, 485,763.30 and 99,202.20 is: 148,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,842.20 : 485,763.30 = 99,202.20 : x
  2. Step 2: Convert to fraction form
    323,842.20/485,763.30 = 99,202.20/x
  3. Step 3: Cross multiply
    323,842.20x = 485,763.30 × 99,202.20
  4. Step 4: Simplify right side
    323,842.20x = 48,188,788,039.26
  5. Step 5: Solve for x
    x = 48,188,788,039.26/323,842.20
  6. Step 6: Final answer
    x = 148,803.30

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1.5x scale

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.