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Finding the Fourth Proportional to 518,883.72, 777,990.18 and 203,372.52

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Solution

The fourth proportional to 518,883.72, 777,990.18 and 203,372.52 is: 304,927.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,883.72 : 777,990.18 = 203,372.52 : x
  2. Step 2: Convert to fraction form
    518,883.72/777,990.18 = 203,372.52/x
  3. Step 3: Cross multiply
    518,883.72x = 777,990.18 × 203,372.52
  4. Step 4: Simplify right side
    518,883.72x = 158,221,823,441.85
  5. Step 5: Solve for x
    x = 158,221,823,441.85/518,883.72
  6. Step 6: Final answer
    x = 304,927.32

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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.