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Finding the Fourth Proportional to 407,579.67, 611,172.90 and 170,858.79

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Solution

The fourth proportional to 407,579.67, 611,172.90 and 170,858.79 is: 256,205.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,579.67 : 611,172.90 = 170,858.79 : x
  2. Step 2: Convert to fraction form
    407,579.67/611,172.90 = 170,858.79/x
  3. Step 3: Cross multiply
    407,579.67x = 611,172.90 × 170,858.79
  4. Step 4: Simplify right side
    407,579.67x = 104,424,262,174.79
  5. Step 5: Solve for x
    x = 104,424,262,174.79/407,579.67
  6. Step 6: Final answer
    x = 256,205.77

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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.