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Finding the Fourth Proportional to 315,759.62, 435,754.54 and 172,528.54

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Solution

The fourth proportional to 315,759.62, 435,754.54 and 172,528.54 is: 238,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,759.62 : 435,754.54 = 172,528.54 : x
  2. Step 2: Convert to fraction form
    315,759.62/435,754.54 = 172,528.54/x
  3. Step 3: Cross multiply
    315,759.62x = 435,754.54 × 172,528.54
  4. Step 4: Simplify right side
    315,759.62x = 75,180,094,584.57
  5. Step 5: Solve for x
    x = 75,180,094,584.57/315,759.62
  6. Step 6: Final answer
    x = 238,092.81

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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.