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Finding the Fourth Proportional to 445,323.56, 667,842.78 and 145,722.92

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Solution

The fourth proportional to 445,323.56, 667,842.78 and 145,722.92 is: 218,537.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,323.56 : 667,842.78 = 145,722.92 : x
  2. Step 2: Convert to fraction form
    445,323.56/667,842.78 = 145,722.92/x
  3. Step 3: Cross multiply
    445,323.56x = 667,842.78 × 145,722.92
  4. Step 4: Simplify right side
    445,323.56x = 97,320,000,002.52
  5. Step 5: Solve for x
    x = 97,320,000,002.52/445,323.56
  6. Step 6: Final answer
    x = 218,537.73

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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.