Home / 427,729.28-641,615.04-112,186.88

Finding the Fourth Proportional to 427,729.28, 641,615.04 and 112,186.88

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Solution

The fourth proportional to 427,729.28, 641,615.04 and 112,186.88 is: 168,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,729.28 : 641,615.04 = 112,186.88 : x
  2. Step 2: Convert to fraction form
    427,729.28/641,615.04 = 112,186.88/x
  3. Step 3: Cross multiply
    427,729.28x = 641,615.04 × 112,186.88
  4. Step 4: Simplify right side
    427,729.28x = 71,980,789,498.68
  5. Step 5: Solve for x
    x = 71,980,789,498.68/427,729.28
  6. Step 6: Final answer
    x = 168,285.86

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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.