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Finding the Fourth Proportional to 381,606.40, 572,409.60 and 115,553.80

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Solution

The fourth proportional to 381,606.40, 572,409.60 and 115,553.80 is: 173,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,606.40 : 572,409.60 = 115,553.80 : x
  2. Step 2: Convert to fraction form
    381,606.40/572,409.60 = 115,553.80/x
  3. Step 3: Cross multiply
    381,606.40x = 572,409.60 × 115,553.80
  4. Step 4: Simplify right side
    381,606.40x = 66,144,104,436.48
  5. Step 5: Solve for x
    x = 66,144,104,436.48/381,606.40
  6. Step 6: Final answer
    x = 173,330.70

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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.