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Finding the Fourth Proportional to 355,464.48, 490,539.78 and 194,319.48

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Solution

The fourth proportional to 355,464.48, 490,539.78 and 194,319.48 is: 268,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,464.48 : 490,539.78 = 194,319.48 : x
  2. Step 2: Convert to fraction form
    355,464.48/490,539.78 = 194,319.48/x
  3. Step 3: Cross multiply
    355,464.48x = 490,539.78 × 194,319.48
  4. Step 4: Simplify right side
    355,464.48x = 95,321,434,968.91
  5. Step 5: Solve for x
    x = 95,321,434,968.91/355,464.48
  6. Step 6: Final answer
    x = 268,160.23

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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.