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Finding the Fourth Proportional to 274,421.40, 411,456.42 and 124,505.88

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Solution

The fourth proportional to 274,421.40, 411,456.42 and 124,505.88 is: 186,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,421.40 : 411,456.42 = 124,505.88 : x
  2. Step 2: Convert to fraction form
    274,421.40/411,456.42 = 124,505.88/x
  3. Step 3: Cross multiply
    274,421.40x = 411,456.42 × 124,505.88
  4. Step 4: Simplify right side
    274,421.40x = 51,228,743,653.75
  5. Step 5: Solve for x
    x = 51,228,743,653.75/274,421.40
  6. Step 6: Final answer
    x = 186,679.11

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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.