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Finding the Fourth Proportional to 516,372.60, 774,559.50 and 161,388.48

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Solution

The fourth proportional to 516,372.60, 774,559.50 and 161,388.48 is: 242,082.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,372.60 : 774,559.50 = 161,388.48 : x
  2. Step 2: Convert to fraction form
    516,372.60/774,559.50 = 161,388.48/x
  3. Step 3: Cross multiply
    516,372.60x = 774,559.50 × 161,388.48
  4. Step 4: Simplify right side
    516,372.60x = 125,004,980,374.56
  5. Step 5: Solve for x
    x = 125,004,980,374.56/516,372.60
  6. Step 6: Final answer
    x = 242,082.91

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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.