Home / 311,613.12-429,930.50-190,628.28

Finding the Fourth Proportional to 311,613.12, 429,930.50 and 190,628.28

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Solution

The fourth proportional to 311,613.12, 429,930.50 and 190,628.28 is: 263,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,613.12 : 429,930.50 = 190,628.28 : x
  2. Step 2: Convert to fraction form
    311,613.12/429,930.50 = 190,628.28/x
  3. Step 3: Cross multiply
    311,613.12x = 429,930.50 × 190,628.28
  4. Step 4: Simplify right side
    311,613.12x = 81,956,909,584.89
  5. Step 5: Solve for x
    x = 81,956,909,584.89/311,613.12
  6. Step 6: Final answer
    x = 263,008.54

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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.