Home / 285,964.20-428,946.30-219,738.60

Finding the Fourth Proportional to 285,964.20, 428,946.30 and 219,738.60

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Solution

The fourth proportional to 285,964.20, 428,946.30 and 219,738.60 is: 329,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,964.20 : 428,946.30 = 219,738.60 : x
  2. Step 2: Convert to fraction form
    285,964.20/428,946.30 = 219,738.60/x
  3. Step 3: Cross multiply
    285,964.20x = 428,946.30 × 219,738.60
  4. Step 4: Simplify right side
    285,964.20x = 94,256,059,437.18
  5. Step 5: Solve for x
    x = 94,256,059,437.18/285,964.20
  6. Step 6: Final answer
    x = 329,607.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.