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Finding the Fourth Proportional to 216,462.58, 324,736.40 and 66,677.38

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Solution

The fourth proportional to 216,462.58, 324,736.40 and 66,677.38 is: 100,029.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,462.58 : 324,736.40 = 66,677.38 : x
  2. Step 2: Convert to fraction form
    216,462.58/324,736.40 = 66,677.38/x
  3. Step 3: Cross multiply
    216,462.58x = 324,736.40 × 66,677.38
  4. Step 4: Simplify right side
    216,462.58x = 21,652,572,342.63
  5. Step 5: Solve for x
    x = 21,652,572,342.63/216,462.58
  6. Step 6: Final answer
    x = 100,029.17

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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.