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Finding the Fourth Proportional to 398,295.70, 549,851.25 and 269,912.42

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Solution

The fourth proportional to 398,295.70, 549,851.25 and 269,912.42 is: 372,616.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,295.70 : 549,851.25 = 269,912.42 : x
  2. Step 2: Convert to fraction form
    398,295.70/549,851.25 = 269,912.42/x
  3. Step 3: Cross multiply
    398,295.70x = 549,851.25 × 269,912.42
  4. Step 4: Simplify right side
    398,295.70x = 148,411,681,527.53
  5. Step 5: Solve for x
    x = 148,411,681,527.53/398,295.70
  6. Step 6: Final answer
    x = 372,616.83

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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.