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Finding the Fourth Proportional to 453,083.45, 679,690.77 and 137,540.66

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Solution

The fourth proportional to 453,083.45, 679,690.77 and 137,540.66 is: 206,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,083.45 : 679,690.77 = 137,540.66 : x
  2. Step 2: Convert to fraction form
    453,083.45/679,690.77 = 137,540.66/x
  3. Step 3: Cross multiply
    453,083.45x = 679,690.77 × 137,540.66
  4. Step 4: Simplify right side
    453,083.45x = 93,485,113,703.25
  5. Step 5: Solve for x
    x = 93,485,113,703.25/453,083.45
  6. Step 6: Final answer
    x = 206,330.90

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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.