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Finding the Fourth Proportional to 253,294.52, 379,565.78 and 140,820.01

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Solution

The fourth proportional to 253,294.52, 379,565.78 and 140,820.01 is: 211,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,294.52 : 379,565.78 = 140,820.01 : x
  2. Step 2: Convert to fraction form
    253,294.52/379,565.78 = 140,820.01/x
  3. Step 3: Cross multiply
    253,294.52x = 379,565.78 × 140,820.01
  4. Step 4: Simplify right side
    253,294.52x = 53,450,454,333.33
  5. Step 5: Solve for x
    x = 53,450,454,333.33/253,294.52
  6. Step 6: Final answer
    x = 211,020.97

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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.