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Finding the Fourth Proportional to 216,063.90, 323,998.65 and 82,899.90

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Solution

The fourth proportional to 216,063.90, 323,998.65 and 82,899.90 is: 124,312.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,063.90 : 323,998.65 = 82,899.90 : x
  2. Step 2: Convert to fraction form
    216,063.90/323,998.65 = 82,899.90/x
  3. Step 3: Cross multiply
    216,063.90x = 323,998.65 × 82,899.90
  4. Step 4: Simplify right side
    216,063.90x = 26,859,455,685.14
  5. Step 5: Solve for x
    x = 26,859,455,685.14/216,063.90
  6. Step 6: Final answer
    x = 124,312.56

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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.