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Finding the Fourth Proportional to 518,159.70, 777,472.82 and 281,147.22

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Solution

The fourth proportional to 518,159.70, 777,472.82 and 281,147.22 is: 421,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,159.70 : 777,472.82 = 281,147.22 : x
  2. Step 2: Convert to fraction form
    518,159.70/777,472.82 = 281,147.22/x
  3. Step 3: Cross multiply
    518,159.70x = 777,472.82 × 281,147.22
  4. Step 4: Simplify right side
    518,159.70x = 218,584,322,671.43
  5. Step 5: Solve for x
    x = 218,584,322,671.43/518,159.70
  6. Step 6: Final answer
    x = 421,847.40

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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.