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Finding the Fourth Proportional to 216,483.64, 298,553.92 and 135,918.64

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Solution

The fourth proportional to 216,483.64, 298,553.92 and 135,918.64 is: 187,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,483.64 : 298,553.92 = 135,918.64 : x
  2. Step 2: Convert to fraction form
    216,483.64/298,553.92 = 135,918.64/x
  3. Step 3: Cross multiply
    216,483.64x = 298,553.92 × 135,918.64
  4. Step 4: Simplify right side
    216,483.64x = 40,579,042,773.07
  5. Step 5: Solve for x
    x = 40,579,042,773.07/216,483.64
  6. Step 6: Final answer
    x = 187,446.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.