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Finding the Fourth Proportional to 493,481.76, 681,004.08 and 267,128.16

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Solution

The fourth proportional to 493,481.76, 681,004.08 and 267,128.16 is: 368,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,481.76 : 681,004.08 = 267,128.16 : x
  2. Step 2: Convert to fraction form
    493,481.76/681,004.08 = 267,128.16/x
  3. Step 3: Cross multiply
    493,481.76x = 681,004.08 × 267,128.16
  4. Step 4: Simplify right side
    493,481.76x = 181,915,366,842.89
  5. Step 5: Solve for x
    x = 181,915,366,842.89/493,481.76
  6. Step 6: Final answer
    x = 368,636.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.