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Finding the Fourth Proportional to 239,122.89, 329,978.07 and 131,697.45

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Solution

The fourth proportional to 239,122.89, 329,978.07 and 131,697.45 is: 181,736.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,122.89 : 329,978.07 = 131,697.45 : x
  2. Step 2: Convert to fraction form
    239,122.89/329,978.07 = 131,697.45/x
  3. Step 3: Cross multiply
    239,122.89x = 329,978.07 × 131,697.45
  4. Step 4: Simplify right side
    239,122.89x = 43,457,270,374.92
  5. Step 5: Solve for x
    x = 43,457,270,374.92/239,122.89
  6. Step 6: Final answer
    x = 181,736.14

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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.