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Finding the Fourth Proportional to 238,889.70, 329,660.78 and 131,459.66

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Solution

The fourth proportional to 238,889.70, 329,660.78 and 131,459.66 is: 181,410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,889.70 : 329,660.78 = 131,459.66 : x
  2. Step 2: Convert to fraction form
    238,889.70/329,660.78 = 131,459.66/x
  3. Step 3: Cross multiply
    238,889.70x = 329,660.78 × 131,459.66
  4. Step 4: Simplify right side
    238,889.70x = 43,337,094,054.13
  5. Step 5: Solve for x
    x = 43,337,094,054.13/238,889.70
  6. Step 6: Final answer
    x = 181,410.48

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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.