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Finding the Fourth Proportional to 264,344.40, 396,516.60 and 139,928.40

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Solution

The fourth proportional to 264,344.40, 396,516.60 and 139,928.40 is: 209,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,344.40 : 396,516.60 = 139,928.40 : x
  2. Step 2: Convert to fraction form
    264,344.40/396,516.60 = 139,928.40/x
  3. Step 3: Cross multiply
    264,344.40x = 396,516.60 × 139,928.40
  4. Step 4: Simplify right side
    264,344.40x = 55,483,933,411.44
  5. Step 5: Solve for x
    x = 55,483,933,411.44/264,344.40
  6. Step 6: Final answer
    x = 209,892.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.