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Finding the Fourth Proportional to 215,358.67, 323,039.22 and 191,775.52

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Solution

The fourth proportional to 215,358.67, 323,039.22 and 191,775.52 is: 287,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,358.67 : 323,039.22 = 191,775.52 : x
  2. Step 2: Convert to fraction form
    215,358.67/323,039.22 = 191,775.52/x
  3. Step 3: Cross multiply
    215,358.67x = 323,039.22 × 191,775.52
  4. Step 4: Simplify right side
    215,358.67x = 61,951,014,395.89
  5. Step 5: Solve for x
    x = 61,951,014,395.89/215,358.67
  6. Step 6: Final answer
    x = 287,664.36

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1.5x scale

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.