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Finding the Fourth Proportional to 665,891.64, 998,846.68 and 216,614.86

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Solution

The fourth proportional to 665,891.64, 998,846.68 and 216,614.86 is: 324,925.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,891.64 : 998,846.68 = 216,614.86 : x
  2. Step 2: Convert to fraction form
    665,891.64/998,846.68 = 216,614.86/x
  3. Step 3: Cross multiply
    665,891.64x = 998,846.68 × 216,614.86
  4. Step 4: Simplify right side
    665,891.64x = 216,365,033,749.67
  5. Step 5: Solve for x
    x = 216,365,033,749.67/665,891.64
  6. Step 6: Final answer
    x = 324,925.29

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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.