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Finding the Fourth Proportional to 643,500.91, 965,505.60 and 244,247.66

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Solution

The fourth proportional to 643,500.91, 965,505.60 and 244,247.66 is: 366,467.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,500.91 : 965,505.60 = 244,247.66 : x
  2. Step 2: Convert to fraction form
    643,500.91/965,505.60 = 244,247.66/x
  3. Step 3: Cross multiply
    643,500.91x = 965,505.60 × 244,247.66
  4. Step 4: Simplify right side
    643,500.91x = 235,822,477,468.13
  5. Step 5: Solve for x
    x = 235,822,477,468.13/643,500.91
  6. Step 6: Final answer
    x = 366,467.98

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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.