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Finding the Fourth Proportional to 458,511.90, 687,734.82 and 121,544.88

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Solution

The fourth proportional to 458,511.90, 687,734.82 and 121,544.88 is: 182,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,511.90 : 687,734.82 = 121,544.88 : x
  2. Step 2: Convert to fraction form
    458,511.90/687,734.82 = 121,544.88/x
  3. Step 3: Cross multiply
    458,511.90x = 687,734.82 × 121,544.88
  4. Step 4: Simplify right side
    458,511.90x = 83,590,646,168.72
  5. Step 5: Solve for x
    x = 83,590,646,168.72/458,511.90
  6. Step 6: Final answer
    x = 182,308.56

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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.