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Finding the Fourth Proportional to 262,338.60, 393,410.70 and 84,851.40

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Solution

The fourth proportional to 262,338.60, 393,410.70 and 84,851.40 is: 127,245.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,338.60 : 393,410.70 = 84,851.40 : x
  2. Step 2: Convert to fraction form
    262,338.60/393,410.70 = 84,851.40/x
  3. Step 3: Cross multiply
    262,338.60x = 393,410.70 × 84,851.40
  4. Step 4: Simplify right side
    262,338.60x = 33,381,448,669.98
  5. Step 5: Solve for x
    x = 33,381,448,669.98/262,338.60
  6. Step 6: Final answer
    x = 127,245.66

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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.