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Finding the Fourth Proportional to 480,814.86, 663,540.90 and 274,113.82

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Solution

The fourth proportional to 480,814.86, 663,540.90 and 274,113.82 is: 378,286.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,814.86 : 663,540.90 = 274,113.82 : x
  2. Step 2: Convert to fraction form
    480,814.86/663,540.90 = 274,113.82/x
  3. Step 3: Cross multiply
    480,814.86x = 663,540.90 × 274,113.82
  4. Step 4: Simplify right side
    480,814.86x = 181,885,730,825.24
  5. Step 5: Solve for x
    x = 181,885,730,825.24/480,814.86
  6. Step 6: Final answer
    x = 378,286.42

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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.