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Finding the Fourth Proportional to 398,296.20, 549,851.94 and 269,912.92

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Solution

The fourth proportional to 398,296.20, 549,851.94 and 269,912.92 is: 372,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,296.20 : 549,851.94 = 269,912.92 : x
  2. Step 2: Convert to fraction form
    398,296.20/549,851.94 = 269,912.92/x
  3. Step 3: Cross multiply
    398,296.20x = 549,851.94 × 269,912.92
  4. Step 4: Simplify right side
    398,296.20x = 148,412,142,693.07
  5. Step 5: Solve for x
    x = 148,412,142,693.07/398,296.20
  6. Step 6: Final answer
    x = 372,617.52

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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.