Home / 305,666.30-458,519.70-81,023.60

Finding the Fourth Proportional to 305,666.30, 458,519.70 and 81,023.60

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Solution

The fourth proportional to 305,666.30, 458,519.70 and 81,023.60 is: 121,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,666.30 : 458,519.70 = 81,023.60 : x
  2. Step 2: Convert to fraction form
    305,666.30/458,519.70 = 81,023.60/x
  3. Step 3: Cross multiply
    305,666.30x = 458,519.70 × 81,023.60
  4. Step 4: Simplify right side
    305,666.30x = 37,150,916,764.92
  5. Step 5: Solve for x
    x = 37,150,916,764.92/305,666.30
  6. Step 6: Final answer
    x = 121,540.77

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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.