Home / 306,235.20-422,650.56-220,478.04

Finding the Fourth Proportional to 306,235.20, 422,650.56 and 220,478.04

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Solution

The fourth proportional to 306,235.20, 422,650.56 and 220,478.04 is: 304,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,235.20 : 422,650.56 = 220,478.04 : x
  2. Step 2: Convert to fraction form
    306,235.20/422,650.56 = 220,478.04/x
  3. Step 3: Cross multiply
    306,235.20x = 422,650.56 × 220,478.04
  4. Step 4: Simplify right side
    306,235.20x = 93,185,167,073.70
  5. Step 5: Solve for x
    x = 93,185,167,073.70/306,235.20
  6. Step 6: Final answer
    x = 304,292.80

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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.