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Finding the Fourth Proportional to 578,516.40, 867,694.60 and 179,431.60

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Solution

The fourth proportional to 578,516.40, 867,694.60 and 179,431.60 is: 269,122.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,516.40 : 867,694.60 = 179,431.60 : x
  2. Step 2: Convert to fraction form
    578,516.40/867,694.60 = 179,431.60/x
  3. Step 3: Cross multiply
    578,516.40x = 867,694.60 × 179,431.60
  4. Step 4: Simplify right side
    578,516.40x = 155,691,830,389.36
  5. Step 5: Solve for x
    x = 155,691,830,389.36/578,516.40
  6. Step 6: Final answer
    x = 269,122.59

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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.