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Finding the Fourth Proportional to 306,767, 423,338.46 and 172,633.88

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Solution

The fourth proportional to 306,767, 423,338.46 and 172,633.88 is: 238,234.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,767 : 423,338.46 = 172,633.88 : x
  2. Step 2: Convert to fraction form
    306,767/423,338.46 = 172,633.88/x
  3. Step 3: Cross multiply
    306,767x = 423,338.46 × 172,633.88
  4. Step 4: Simplify right side
    306,767x = 73,082,560,903.02
  5. Step 5: Solve for x
    x = 73,082,560,903.02/306,767
  6. Step 6: Final answer
    x = 238,234.75

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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.