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Finding the Fourth Proportional to 328,555.32, 492,757.65 and 91,921.92

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Solution

The fourth proportional to 328,555.32, 492,757.65 and 91,921.92 is: 137,861.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,555.32 : 492,757.65 = 91,921.92 : x
  2. Step 2: Convert to fraction form
    328,555.32/492,757.65 = 91,921.92/x
  3. Step 3: Cross multiply
    328,555.32x = 492,757.65 × 91,921.92
  4. Step 4: Simplify right side
    328,555.32x = 45,295,229,282.69
  5. Step 5: Solve for x
    x = 45,295,229,282.69/328,555.32
  6. Step 6: Final answer
    x = 137,861.80

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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.