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Finding the Fourth Proportional to 643,551.96, 965,331.18 and 264,679.32

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Solution

The fourth proportional to 643,551.96, 965,331.18 and 264,679.32 is: 397,020.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,551.96 : 965,331.18 = 264,679.32 : x
  2. Step 2: Convert to fraction form
    643,551.96/965,331.18 = 264,679.32/x
  3. Step 3: Cross multiply
    643,551.96x = 965,331.18 × 264,679.32
  4. Step 4: Simplify right side
    643,551.96x = 255,503,200,297.20
  5. Step 5: Solve for x
    x = 255,503,200,297.20/643,551.96
  6. Step 6: Final answer
    x = 397,020.31

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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.