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Finding the Fourth Proportional to 239,270.40, 330,207.88 and 131,840.40

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Solution

The fourth proportional to 239,270.40, 330,207.88 and 131,840.40 is: 181,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,270.40 : 330,207.88 = 131,840.40 : x
  2. Step 2: Convert to fraction form
    239,270.40/330,207.88 = 131,840.40/x
  3. Step 3: Cross multiply
    239,270.40x = 330,207.88 × 131,840.40
  4. Step 4: Simplify right side
    239,270.40x = 43,534,738,982.35
  5. Step 5: Solve for x
    x = 43,534,738,982.35/239,270.40
  6. Step 6: Final answer
    x = 181,947.87

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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.