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Finding the Fourth Proportional to 238,903.32, 329,686.62 and 131,481

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Solution

The fourth proportional to 238,903.32, 329,686.62 and 131,481 is: 181,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,903.32 : 329,686.62 = 131,481 : x
  2. Step 2: Convert to fraction form
    238,903.32/329,686.62 = 131,481/x
  3. Step 3: Cross multiply
    238,903.32x = 329,686.62 × 131,481
  4. Step 4: Simplify right side
    238,903.32x = 43,347,526,484.22
  5. Step 5: Solve for x
    x = 43,347,526,484.22/238,903.32
  6. Step 6: Final answer
    x = 181,443.80

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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.