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Finding the Fourth Proportional to 620,216.32, 930,327.92 and 220,872.64

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Solution

The fourth proportional to 620,216.32, 930,327.92 and 220,872.64 is: 331,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,216.32 : 930,327.92 = 220,872.64 : x
  2. Step 2: Convert to fraction form
    620,216.32/930,327.92 = 220,872.64/x
  3. Step 3: Cross multiply
    620,216.32x = 930,327.92 × 220,872.64
  4. Step 4: Simplify right side
    620,216.32x = 205,483,983,756.11
  5. Step 5: Solve for x
    x = 205,483,983,756.11/620,216.32
  6. Step 6: Final answer
    x = 331,310.19

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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.