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Finding the Fourth Proportional to 240,018.96, 331,266.60 and 139,475.28

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Solution

The fourth proportional to 240,018.96, 331,266.60 and 139,475.28 is: 192,499.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,018.96 : 331,266.60 = 139,475.28 : x
  2. Step 2: Convert to fraction form
    240,018.96/331,266.60 = 139,475.28/x
  3. Step 3: Cross multiply
    240,018.96x = 331,266.60 × 139,475.28
  4. Step 4: Simplify right side
    240,018.96x = 46,203,501,789.65
  5. Step 5: Solve for x
    x = 46,203,501,789.65/240,018.96
  6. Step 6: Final answer
    x = 192,499.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.