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Finding the Fourth Proportional to 280,874.90, 387,611.97 and 167,707.54

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Solution

The fourth proportional to 280,874.90, 387,611.97 and 167,707.54 is: 231,439.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,874.90 : 387,611.97 = 167,707.54 : x
  2. Step 2: Convert to fraction form
    280,874.90/387,611.97 = 167,707.54/x
  3. Step 3: Cross multiply
    280,874.90x = 387,611.97 × 167,707.54
  4. Step 4: Simplify right side
    280,874.90x = 65,005,449,963.25
  5. Step 5: Solve for x
    x = 65,005,449,963.25/280,874.90
  6. Step 6: Final answer
    x = 231,439.16

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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.