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Finding the Fourth Proportional to 536,639.34, 804,986.57 and 137,283.55

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Solution

The fourth proportional to 536,639.34, 804,986.57 and 137,283.55 is: 205,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,639.34 : 804,986.57 = 137,283.55 : x
  2. Step 2: Convert to fraction form
    536,639.34/804,986.57 = 137,283.55/x
  3. Step 3: Cross multiply
    536,639.34x = 804,986.57 × 137,283.55
  4. Step 4: Simplify right side
    536,639.34x = 110,511,416,044.39
  5. Step 5: Solve for x
    x = 110,511,416,044.39/536,639.34
  6. Step 6: Final answer
    x = 205,932.38

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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.