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Finding the Fourth Proportional to 481,251.07, 721,874.63 and 121,422.76

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Solution

The fourth proportional to 481,251.07, 721,874.63 and 121,422.76 is: 182,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,251.07 : 721,874.63 = 121,422.76 : x
  2. Step 2: Convert to fraction form
    481,251.07/721,874.63 = 121,422.76/x
  3. Step 3: Cross multiply
    481,251.07x = 721,874.63 × 121,422.76
  4. Step 4: Simplify right side
    481,251.07x = 87,652,009,948.58
  5. Step 5: Solve for x
    x = 87,652,009,948.58/481,251.07
  6. Step 6: Final answer
    x = 182,133.64

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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.