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Finding the Fourth Proportional to 238,730, 329,450.10 and 131,301.80

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Solution

The fourth proportional to 238,730, 329,450.10 and 131,301.80 is: 181,197.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,730 : 329,450.10 = 131,301.80 : x
  2. Step 2: Convert to fraction form
    238,730/329,450.10 = 131,301.80/x
  3. Step 3: Cross multiply
    238,730x = 329,450.10 × 131,301.80
  4. Step 4: Simplify right side
    238,730x = 43,257,391,140.18
  5. Step 5: Solve for x
    x = 43,257,391,140.18/238,730
  6. Step 6: Final answer
    x = 181,197.97

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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.