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Finding the Fourth Proportional to 296,945.20, 445,417.80 and 139,481.20

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Solution

The fourth proportional to 296,945.20, 445,417.80 and 139,481.20 is: 209,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,945.20 : 445,417.80 = 139,481.20 : x
  2. Step 2: Convert to fraction form
    296,945.20/445,417.80 = 139,481.20/x
  3. Step 3: Cross multiply
    296,945.20x = 445,417.80 × 139,481.20
  4. Step 4: Simplify right side
    296,945.20x = 62,127,409,245.36
  5. Step 5: Solve for x
    x = 62,127,409,245.36/296,945.20
  6. Step 6: Final answer
    x = 209,221.80

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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.