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Finding the Fourth Proportional to 665,403.20, 998,250.60 and 216,047.60

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Solution

The fourth proportional to 665,403.20, 998,250.60 and 216,047.60 is: 324,118.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,403.20 : 998,250.60 = 216,047.60 : x
  2. Step 2: Convert to fraction form
    665,403.20/998,250.60 = 216,047.60/x
  3. Step 3: Cross multiply
    665,403.20x = 998,250.60 × 216,047.60
  4. Step 4: Simplify right side
    665,403.20x = 215,669,646,328.56
  5. Step 5: Solve for x
    x = 215,669,646,328.56/665,403.20
  6. Step 6: Final answer
    x = 324,118.74

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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.