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Finding the Fourth Proportional to 355,400.63, 533,194.42 and 127,719.25

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Solution

The fourth proportional to 355,400.63, 533,194.42 and 127,719.25 is: 191,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,400.63 : 533,194.42 = 127,719.25 : x
  2. Step 2: Convert to fraction form
    355,400.63/533,194.42 = 127,719.25/x
  3. Step 3: Cross multiply
    355,400.63x = 533,194.42 × 127,719.25
  4. Step 4: Simplify right side
    355,400.63x = 68,099,190,372.98
  5. Step 5: Solve for x
    x = 68,099,190,372.98/355,400.63
  6. Step 6: Final answer
    x = 191,612.46

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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.