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Finding the Fourth Proportional to 306,725.62, 423,273.10 and 170,759.58

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Solution

The fourth proportional to 306,725.62, 423,273.10 and 170,759.58 is: 235,643.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,725.62 : 423,273.10 = 170,759.58 : x
  2. Step 2: Convert to fraction form
    306,725.62/423,273.10 = 170,759.58/x
  3. Step 3: Cross multiply
    306,725.62x = 423,273.10 × 170,759.58
  4. Step 4: Simplify right side
    306,725.62x = 72,277,936,781.30
  5. Step 5: Solve for x
    x = 72,277,936,781.30/306,725.62
  6. Step 6: Final answer
    x = 235,643.62

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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.