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Finding the Fourth Proportional to 438,571.44, 657,857.22 and 154,471.80

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Solution

The fourth proportional to 438,571.44, 657,857.22 and 154,471.80 is: 231,707.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,571.44 : 657,857.22 = 154,471.80 : x
  2. Step 2: Convert to fraction form
    438,571.44/657,857.22 = 154,471.80/x
  3. Step 3: Cross multiply
    438,571.44x = 657,857.22 × 154,471.80
  4. Step 4: Simplify right side
    438,571.44x = 101,620,388,916.40
  5. Step 5: Solve for x
    x = 101,620,388,916.40/438,571.44
  6. Step 6: Final answer
    x = 231,707.72

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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.