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Finding the Fourth Proportional to 379,669.75, 569,537.43 and 99,187

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Solution

The fourth proportional to 379,669.75, 569,537.43 and 99,187 is: 148,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,669.75 : 569,537.43 = 99,187 : x
  2. Step 2: Convert to fraction form
    379,669.75/569,537.43 = 99,187/x
  3. Step 3: Cross multiply
    379,669.75x = 569,537.43 × 99,187
  4. Step 4: Simplify right side
    379,669.75x = 56,490,709,069.41
  5. Step 5: Solve for x
    x = 56,490,709,069.41/379,669.75
  6. Step 6: Final answer
    x = 148,789.07

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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.