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Finding the Fourth Proportional to 499,654.87, 689,529.16 and 270,216.64

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Solution

The fourth proportional to 499,654.87, 689,529.16 and 270,216.64 is: 372,901.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,654.87 : 689,529.16 = 270,216.64 : x
  2. Step 2: Convert to fraction form
    499,654.87/689,529.16 = 270,216.64/x
  3. Step 3: Cross multiply
    499,654.87x = 689,529.16 × 270,216.64
  4. Step 4: Simplify right side
    499,654.87x = 186,322,250,878.29
  5. Step 5: Solve for x
    x = 186,322,250,878.29/499,654.87
  6. Step 6: Final answer
    x = 372,901.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.