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Finding the Fourth Proportional to 262,519.80, 393,842.43 and 85,027.02

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Solution

The fourth proportional to 262,519.80, 393,842.43 and 85,027.02 is: 127,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,519.80 : 393,842.43 = 85,027.02 : x
  2. Step 2: Convert to fraction form
    262,519.80/393,842.43 = 85,027.02/x
  3. Step 3: Cross multiply
    262,519.80x = 393,842.43 × 85,027.02
  4. Step 4: Simplify right side
    262,519.80x = 33,487,248,172.46
  5. Step 5: Solve for x
    x = 33,487,248,172.46/262,519.80
  6. Step 6: Final answer
    x = 127,560.85

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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.