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Finding the Fourth Proportional to 536,748.30, 805,121.93 and 137,388.43

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Solution

The fourth proportional to 536,748.30, 805,121.93 and 137,388.43 is: 206,082.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,748.30 : 805,121.93 = 137,388.43 : x
  2. Step 2: Convert to fraction form
    536,748.30/805,121.93 = 137,388.43/x
  3. Step 3: Cross multiply
    536,748.30x = 805,121.93 × 137,388.43
  4. Step 4: Simplify right side
    536,748.30x = 110,614,439,271.14
  5. Step 5: Solve for x
    x = 110,614,439,271.14/536,748.30
  6. Step 6: Final answer
    x = 206,082.51

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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.