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Finding the Fourth Proportional to 453,761.40, 680,739.06 and 138,243.48

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Solution

The fourth proportional to 453,761.40, 680,739.06 and 138,243.48 is: 207,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,761.40 : 680,739.06 = 138,243.48 : x
  2. Step 2: Convert to fraction form
    453,761.40/680,739.06 = 138,243.48/x
  3. Step 3: Cross multiply
    453,761.40x = 680,739.06 × 138,243.48
  4. Step 4: Simplify right side
    453,761.40x = 94,107,736,626.33
  5. Step 5: Solve for x
    x = 94,107,736,626.33/453,761.40
  6. Step 6: Final answer
    x = 207,394.76

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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.