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Finding the Fourth Proportional to 328,234.43, 492,434.61 and 91,576.91

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Solution

The fourth proportional to 328,234.43, 492,434.61 and 91,576.91 is: 137,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,234.43 : 492,434.61 = 91,576.91 : x
  2. Step 2: Convert to fraction form
    328,234.43/492,434.61 = 91,576.91/x
  3. Step 3: Cross multiply
    328,234.43x = 492,434.61 × 91,576.91
  4. Step 4: Simplify right side
    328,234.43x = 45,095,639,960.86
  5. Step 5: Solve for x
    x = 45,095,639,960.86/328,234.43
  6. Step 6: Final answer
    x = 137,388.51

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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.