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Finding the Fourth Proportional to 262,650.52, 393,984.42 and 85,159

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Solution

The fourth proportional to 262,650.52, 393,984.42 and 85,159 is: 127,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,650.52 : 393,984.42 = 85,159 : x
  2. Step 2: Convert to fraction form
    262,650.52/393,984.42 = 85,159/x
  3. Step 3: Cross multiply
    262,650.52x = 393,984.42 × 85,159
  4. Step 4: Simplify right side
    262,650.52x = 33,551,319,222.78
  5. Step 5: Solve for x
    x = 33,551,319,222.78/262,650.52
  6. Step 6: Final answer
    x = 127,741.30

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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.