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Finding the Fourth Proportional to 328,560.82, 492,765.90 and 91,927.42

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Solution

The fourth proportional to 328,560.82, 492,765.90 and 91,927.42 is: 137,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,560.82 : 492,765.90 = 91,927.42 : x
  2. Step 2: Convert to fraction form
    328,560.82/492,765.90 = 91,927.42/x
  3. Step 3: Cross multiply
    328,560.82x = 492,765.90 × 91,927.42
  4. Step 4: Simplify right side
    328,560.82x = 45,298,697,850.98
  5. Step 5: Solve for x
    x = 45,298,697,850.98/328,560.82
  6. Step 6: Final answer
    x = 137,870.05

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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.