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Finding the Fourth Proportional to 402,383.28, 603,858.51 and 189,160.90

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Solution

The fourth proportional to 402,383.28, 603,858.51 and 189,160.90 is: 283,874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,383.28 : 603,858.51 = 189,160.90 : x
  2. Step 2: Convert to fraction form
    402,383.28/603,858.51 = 189,160.90/x
  3. Step 3: Cross multiply
    402,383.28x = 603,858.51 × 189,160.90
  4. Step 4: Simplify right side
    402,383.28x = 114,226,415,732.06
  5. Step 5: Solve for x
    x = 114,226,415,732.06/402,383.28
  6. Step 6: Final answer
    x = 283,874.66

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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.