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Finding the Fourth Proportional to 305,975.22, 422,244.45 and 170,031.30

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Solution

The fourth proportional to 305,975.22, 422,244.45 and 170,031.30 is: 234,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,975.22 : 422,244.45 = 170,031.30 : x
  2. Step 2: Convert to fraction form
    305,975.22/422,244.45 = 170,031.30/x
  3. Step 3: Cross multiply
    305,975.22x = 422,244.45 × 170,031.30
  4. Step 4: Simplify right side
    305,975.22x = 71,794,772,751.29
  5. Step 5: Solve for x
    x = 71,794,772,751.29/305,975.22
  6. Step 6: Final answer
    x = 234,642.44

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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.