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Finding the Fourth Proportional to 453,119.87, 679,635.84 and 137,579.51

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Solution

The fourth proportional to 453,119.87, 679,635.84 and 137,579.51 is: 206,355.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,119.87 : 679,635.84 = 137,579.51 : x
  2. Step 2: Convert to fraction form
    453,119.87/679,635.84 = 137,579.51/x
  3. Step 3: Cross multiply
    453,119.87x = 679,635.84 × 137,579.51
  4. Step 4: Simplify right side
    453,119.87x = 93,503,965,845.64
  5. Step 5: Solve for x
    x = 93,503,965,845.64/453,119.87
  6. Step 6: Final answer
    x = 206,355.92

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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.