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Finding the Fourth Proportional to 445,056.50, 665,141.33 and 325,365.42

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Solution

The fourth proportional to 445,056.50, 665,141.33 and 325,365.42 is: 486,261.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,056.50 : 665,141.33 = 325,365.42 : x
  2. Step 2: Convert to fraction form
    445,056.50/665,141.33 = 325,365.42/x
  3. Step 3: Cross multiply
    445,056.50x = 665,141.33 × 325,365.42
  4. Step 4: Simplify right side
    445,056.50x = 216,413,986,567.98
  5. Step 5: Solve for x
    x = 216,413,986,567.98/445,056.50
  6. Step 6: Final answer
    x = 486,261.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.