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Finding the Fourth Proportional to 536,623.87, 805,304.87 and 221,080.78

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Solution

The fourth proportional to 536,623.87, 805,304.87 and 221,080.78 is: 331,773.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,623.87 : 805,304.87 = 221,080.78 : x
  2. Step 2: Convert to fraction form
    536,623.87/805,304.87 = 221,080.78/x
  3. Step 3: Cross multiply
    536,623.87x = 805,304.87 × 221,080.78
  4. Step 4: Simplify right side
    536,623.87x = 178,037,428,797.40
  5. Step 5: Solve for x
    x = 178,037,428,797.40/536,623.87
  6. Step 6: Final answer
    x = 331,773.22

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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.