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Finding the Fourth Proportional to 328,196.70, 491,310.90 and 308,732.40

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Solution

The fourth proportional to 328,196.70, 491,310.90 and 308,732.40 is: 462,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,196.70 : 491,310.90 = 308,732.40 : x
  2. Step 2: Convert to fraction form
    328,196.70/491,310.90 = 308,732.40/x
  3. Step 3: Cross multiply
    328,196.70x = 491,310.90 × 308,732.40
  4. Step 4: Simplify right side
    328,196.70x = 151,683,593,303.16
  5. Step 5: Solve for x
    x = 151,683,593,303.16/328,196.70
  6. Step 6: Final answer
    x = 462,172.82

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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.