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Finding the Fourth Proportional to 215,381.76, 323,072.54 and 57,606.11

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Solution

The fourth proportional to 215,381.76, 323,072.54 and 57,606.11 is: 86,409.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,381.76 : 323,072.54 = 57,606.11 : x
  2. Step 2: Convert to fraction form
    215,381.76/323,072.54 = 57,606.11/x
  3. Step 3: Cross multiply
    215,381.76x = 323,072.54 × 57,606.11
  4. Step 4: Simplify right side
    215,381.76x = 18,610,952,277.22
  5. Step 5: Solve for x
    x = 18,610,952,277.22/215,381.76
  6. Step 6: Final answer
    x = 86,409.14

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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.