Home / 285,944.19-428,919.35-86,266.30

Finding the Fourth Proportional to 285,944.19, 428,919.35 and 86,266.30

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Solution

The fourth proportional to 285,944.19, 428,919.35 and 86,266.30 is: 129,400.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,944.19 : 428,919.35 = 86,266.30 : x
  2. Step 2: Convert to fraction form
    285,944.19/428,919.35 = 86,266.30/x
  3. Step 3: Cross multiply
    285,944.19x = 428,919.35 × 86,266.30
  4. Step 4: Simplify right side
    285,944.19x = 37,001,285,322.91
  5. Step 5: Solve for x
    x = 37,001,285,322.91/285,944.19
  6. Step 6: Final answer
    x = 129,400.37

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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.