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Finding the Fourth Proportional to 324,101.20, 485,892.60 and 136,958.80

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Solution

The fourth proportional to 324,101.20, 485,892.60 and 136,958.80 is: 205,328.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,101.20 : 485,892.60 = 136,958.80 : x
  2. Step 2: Convert to fraction form
    324,101.20/485,892.60 = 136,958.80/x
  3. Step 3: Cross multiply
    324,101.20x = 485,892.60 × 136,958.80
  4. Step 4: Simplify right side
    324,101.20x = 66,547,267,424.88
  5. Step 5: Solve for x
    x = 66,547,267,424.88/324,101.20
  6. Step 6: Final answer
    x = 205,328.67

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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.