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Finding the Fourth Proportional to 403,537.87, 605,011.56 and 137,226.88

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Solution

The fourth proportional to 403,537.87, 605,011.56 and 137,226.88 is: 205,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,537.87 : 605,011.56 = 137,226.88 : x
  2. Step 2: Convert to fraction form
    403,537.87/605,011.56 = 137,226.88/x
  3. Step 3: Cross multiply
    403,537.87x = 605,011.56 × 137,226.88
  4. Step 4: Simplify right side
    403,537.87x = 83,023,848,742.73
  5. Step 5: Solve for x
    x = 83,023,848,742.73/403,537.87
  6. Step 6: Final answer
    x = 205,739.92

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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.