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Finding the Fourth Proportional to 325,671.72, 449,431.64 and 189,702.16

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Solution

The fourth proportional to 325,671.72, 449,431.64 and 189,702.16 is: 261,791.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,671.72 : 449,431.64 = 189,702.16 : x
  2. Step 2: Convert to fraction form
    325,671.72/449,431.64 = 189,702.16/x
  3. Step 3: Cross multiply
    325,671.72x = 449,431.64 × 189,702.16
  4. Step 4: Simplify right side
    325,671.72x = 85,258,152,880.34
  5. Step 5: Solve for x
    x = 85,258,152,880.34/325,671.72
  6. Step 6: Final answer
    x = 261,791.70

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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.