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Finding the Fourth Proportional to 438,549.54, 657,879.67 and 154,173.25

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Solution

The fourth proportional to 438,549.54, 657,879.67 and 154,173.25 is: 231,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,549.54 : 657,879.67 = 154,173.25 : x
  2. Step 2: Convert to fraction form
    438,549.54/657,879.67 = 154,173.25/x
  3. Step 3: Cross multiply
    438,549.54x = 657,879.67 × 154,173.25
  4. Step 4: Simplify right side
    438,549.54x = 101,427,445,997.61
  5. Step 5: Solve for x
    x = 101,427,445,997.61/438,549.54
  6. Step 6: Final answer
    x = 231,279.33

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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.