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Finding the Fourth Proportional to 262,487.12, 393,793.38 and 84,994.34

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Solution

The fourth proportional to 262,487.12, 393,793.38 and 84,994.34 is: 127,511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,487.12 : 393,793.38 = 84,994.34 : x
  2. Step 2: Convert to fraction form
    262,487.12/393,793.38 = 84,994.34/x
  3. Step 3: Cross multiply
    262,487.12x = 393,793.38 × 84,994.34
  4. Step 4: Simplify right side
    262,487.12x = 33,470,208,429.47
  5. Step 5: Solve for x
    x = 33,470,208,429.47/262,487.12
  6. Step 6: Final answer
    x = 127,511.81

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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.