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Finding the Fourth Proportional to 280,932.66, 421,311.15 and 93,900.42

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Solution

The fourth proportional to 280,932.66, 421,311.15 and 93,900.42 is: 140,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,932.66 : 421,311.15 = 93,900.42 : x
  2. Step 2: Convert to fraction form
    280,932.66/421,311.15 = 93,900.42/x
  3. Step 3: Cross multiply
    280,932.66x = 421,311.15 × 93,900.42
  4. Step 4: Simplify right side
    280,932.66x = 39,561,293,935.68
  5. Step 5: Solve for x
    x = 39,561,293,935.68/280,932.66
  6. Step 6: Final answer
    x = 140,821.27

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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.