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Finding the Fourth Proportional to 227,920.80, 341,978.40 and 109,531.20

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Solution

The fourth proportional to 227,920.80, 341,978.40 and 109,531.20 is: 164,343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,920.80 : 341,978.40 = 109,531.20 : x
  2. Step 2: Convert to fraction form
    227,920.80/341,978.40 = 109,531.20/x
  3. Step 3: Cross multiply
    227,920.80x = 341,978.40 × 109,531.20
  4. Step 4: Simplify right side
    227,920.80x = 37,457,304,526.08
  5. Step 5: Solve for x
    x = 37,457,304,526.08/227,920.80
  6. Step 6: Final answer
    x = 164,343.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.