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Finding the Fourth Proportional to 328,520.67, 492,834.24 and 128,732.73

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Solution

The fourth proportional to 328,520.67, 492,834.24 and 128,732.73 is: 193,119.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,520.67 : 492,834.24 = 128,732.73 : x
  2. Step 2: Convert to fraction form
    328,520.67/492,834.24 = 128,732.73/x
  3. Step 3: Cross multiply
    328,520.67x = 492,834.24 × 128,732.73
  4. Step 4: Simplify right side
    328,520.67x = 63,443,897,152.68
  5. Step 5: Solve for x
    x = 63,443,897,152.68/328,520.67
  6. Step 6: Final answer
    x = 193,119.96

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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.