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Finding the Fourth Proportional to 215,335.36, 322,978.43 and 57,576.11

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Solution

The fourth proportional to 215,335.36, 322,978.43 and 57,576.11 is: 86,357.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,335.36 : 322,978.43 = 57,576.11 : x
  2. Step 2: Convert to fraction form
    215,335.36/322,978.43 = 57,576.11/x
  3. Step 3: Cross multiply
    215,335.36x = 322,978.43 × 57,576.11
  4. Step 4: Simplify right side
    215,335.36x = 18,595,842,564.69
  5. Step 5: Solve for x
    x = 18,595,842,564.69/215,335.36
  6. Step 6: Final answer
    x = 86,357.59

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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.