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Finding the Fourth Proportional to 458,451.56, 687,644.87 and 121,484.75

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Solution

The fourth proportional to 458,451.56, 687,644.87 and 121,484.75 is: 182,218.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,451.56 : 687,644.87 = 121,484.75 : x
  2. Step 2: Convert to fraction form
    458,451.56/687,644.87 = 121,484.75/x
  3. Step 3: Cross multiply
    458,451.56x = 687,644.87 × 121,484.75
  4. Step 4: Simplify right side
    458,451.56x = 83,538,365,120.73
  5. Step 5: Solve for x
    x = 83,538,365,120.73/458,451.56
  6. Step 6: Final answer
    x = 182,218.52

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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.