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Finding the Fourth Proportional to 445,345.68, 667,667.16 and 220,783.44

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Solution

The fourth proportional to 445,345.68, 667,667.16 and 220,783.44 is: 331,000.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,345.68 : 667,667.16 = 220,783.44 : x
  2. Step 2: Convert to fraction form
    445,345.68/667,667.16 = 220,783.44/x
  3. Step 3: Cross multiply
    445,345.68x = 667,667.16 × 220,783.44
  4. Step 4: Simplify right side
    445,345.68x = 147,409,852,359.83
  5. Step 5: Solve for x
    x = 147,409,852,359.83/445,345.68
  6. Step 6: Final answer
    x = 331,000.97

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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.