Home / 306,000.12-422,104.23-191,079.21

Finding the Fourth Proportional to 306,000.12, 422,104.23 and 191,079.21

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Solution

The fourth proportional to 306,000.12, 422,104.23 and 191,079.21 is: 263,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,000.12 : 422,104.23 = 191,079.21 : x
  2. Step 2: Convert to fraction form
    306,000.12/422,104.23 = 191,079.21/x
  3. Step 3: Cross multiply
    306,000.12x = 422,104.23 × 191,079.21
  4. Step 4: Simplify right side
    306,000.12x = 80,655,342,806.06
  5. Step 5: Solve for x
    x = 80,655,342,806.06/306,000.12
  6. Step 6: Final answer
    x = 263,579.45

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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.