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Finding the Fourth Proportional to 665,385.03, 998,363.52 and 216,243.57

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Solution

The fourth proportional to 665,385.03, 998,363.52 and 216,243.57 is: 324,458.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,385.03 : 998,363.52 = 216,243.57 : x
  2. Step 2: Convert to fraction form
    665,385.03/998,363.52 = 216,243.57/x
  3. Step 3: Cross multiply
    665,385.03x = 998,363.52 × 216,243.57
  4. Step 4: Simplify right side
    665,385.03x = 215,889,691,722.57
  5. Step 5: Solve for x
    x = 215,889,691,722.57/665,385.03
  6. Step 6: Final answer
    x = 324,458.29

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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.