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Finding the Fourth Proportional to 665,898.81, 998,857.41 and 216,622.03

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Solution

The fourth proportional to 665,898.81, 998,857.41 and 216,622.03 is: 324,936.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,898.81 : 998,857.41 = 216,622.03 : x
  2. Step 2: Convert to fraction form
    665,898.81/998,857.41 = 216,622.03/x
  3. Step 3: Cross multiply
    665,898.81x = 998,857.41 × 216,622.03
  4. Step 4: Simplify right side
    665,898.81x = 216,374,514,840.46
  5. Step 5: Solve for x
    x = 216,374,514,840.46/665,898.81
  6. Step 6: Final answer
    x = 324,936.03

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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.