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Finding the Fourth Proportional to 610,999.89, 916,544.79 and 161,717.73

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Solution

The fourth proportional to 610,999.89, 916,544.79 and 161,717.73 is: 242,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,999.89 : 916,544.79 = 161,717.73 : x
  2. Step 2: Convert to fraction form
    610,999.89/916,544.79 = 161,717.73/x
  3. Step 3: Cross multiply
    610,999.89x = 916,544.79 × 161,717.73
  4. Step 4: Simplify right side
    610,999.89x = 148,221,542,882.13
  5. Step 5: Solve for x
    x = 148,221,542,882.13/610,999.89
  6. Step 6: Final answer
    x = 242,588.49

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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.