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Finding the Fourth Proportional to 239,858.50, 330,697.05 and 196,678.90

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Solution

The fourth proportional to 239,858.50, 330,697.05 and 196,678.90 is: 271,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,858.50 : 330,697.05 = 196,678.90 : x
  2. Step 2: Convert to fraction form
    239,858.50/330,697.05 = 196,678.90/x
  3. Step 3: Cross multiply
    239,858.50x = 330,697.05 × 196,678.90
  4. Step 4: Simplify right side
    239,858.50x = 65,041,132,027.25
  5. Step 5: Solve for x
    x = 65,041,132,027.25/239,858.50
  6. Step 6: Final answer
    x = 271,164.59

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1.5x scale

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.