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Finding the Fourth Proportional to 398,288.71, 549,841.56 and 269,905.43

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Solution

The fourth proportional to 398,288.71, 549,841.56 and 269,905.43 is: 372,607.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,288.71 : 549,841.56 = 269,905.43 : x
  2. Step 2: Convert to fraction form
    398,288.71/549,841.56 = 269,905.43/x
  3. Step 3: Cross multiply
    398,288.71x = 549,841.56 × 269,905.43
  4. Step 4: Simplify right side
    398,288.71x = 148,405,222,683.67
  5. Step 5: Solve for x
    x = 148,405,222,683.67/398,288.71
  6. Step 6: Final answer
    x = 372,607.15

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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.