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Finding the Fourth Proportional to 413,531.10, 620,383.05 and 133,076.70

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Solution

The fourth proportional to 413,531.10, 620,383.05 and 133,076.70 is: 199,642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,531.10 : 620,383.05 = 133,076.70 : x
  2. Step 2: Convert to fraction form
    413,531.10/620,383.05 = 133,076.70/x
  3. Step 3: Cross multiply
    413,531.10x = 620,383.05 × 133,076.70
  4. Step 4: Simplify right side
    413,531.10x = 82,558,529,029.94
  5. Step 5: Solve for x
    x = 82,558,529,029.94/413,531.10
  6. Step 6: Final answer
    x = 199,642.85

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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.