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Finding the Fourth Proportional to 291,505.79, 437,258.69 and 166,759.31

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Solution

The fourth proportional to 291,505.79, 437,258.69 and 166,759.31 is: 250,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,505.79 : 437,258.69 = 166,759.31 : x
  2. Step 2: Convert to fraction form
    291,505.79/437,258.69 = 166,759.31/x
  3. Step 3: Cross multiply
    291,505.79x = 437,258.69 × 166,759.31
  4. Step 4: Simplify right side
    291,505.79x = 72,916,958,320.60
  5. Step 5: Solve for x
    x = 72,916,958,320.60/291,505.79
  6. Step 6: Final answer
    x = 250,138.97

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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.